2x2 Matrix

Regel von Sarrus (3x3)

Regel von Sarrus (3x3 Determinante)

Gauß'sches Eliminationsverfahren zur Determinantenberechnung

Determinantenberechnung mit Gauß'schem Eliminationsverfahren

Der Laplace'sche Entwicklungssatz

Integralgleichung

kettenregel

Lösbarkeit einer Matrix

Glechgewicht

Schiefe Ebene

Elektrische Anlage mit Abzweigunen

Flächenträgheit

Wechselstrom

Cauchy Verdichtungssatz 

Schaltvorgänge

Singulärwertzerlegung

Spann

Lineares Gleichungssystem

spannung

LR-Zerlegung mit pivotisierung 

Basis bestimmen

trigonalisierbarkeit

Fourier Koeffizienten bestimmen

Reimann-Summen

Ungleichungen 

Statik in der Ebene

Fourier-Reihen

Funktionsfolgen

Unterschied In/Homogen

Basis, Basiswechsel

Abbildungsmatrizen

Funktionen bestimmen

Geraden und Ebenen

Gruppen

lineare abbildung 

quadratische ergänzung

Baustatik 1

Anfangswertprobleme :)

Differentialgleichungen

basis 

QR-Algorithmus

QR-Zerlegung

Cholesky-Zerlegung

Bild & Urbild

Zweigstromanalyse

Transistor als Thermometer

Investment

Teilfolgen

Epsilon Delta Kriterium

prinzip der virtuellen verrückung 

Linear Kombination

Folgen, Reihen und Potenzreihen

Flächenpressung

Arbeit 

Cholesky Zerlegung

Polynomfunktionen beschreiben

Zu Maß-und Integrationstheorie: Majorisierte Konvergenz

Teilchenphysik und Festkörperphysik

Orthogonaltrajektorien

test

Taylorreihen

Regel von de L'Hopital

Mathe

KRAFT

Grenzwert Funktion 

Folgenkriterium

ϵ-δ Kriterium 

Beweis Stetigkeit 

Wahrheitstabelle

Matrix invertieren

Basiswechselsatz

Lineare Abbildunge 

Vorderrad fahradgabel lagerkräfte berechnen 

Spannungsregelung

Jordan Normal Form

Test

Induktion 

Jordan-Normalform

Ansatz der Störfunktion zur Bestimmung der Partikulären Lösung

Kurvenintegral

dlg mithilfe inhomogenen linearen system lösen

Inverse einer Matrix

Gleichmäßige Stetigkeit

addition

Regel von L´Hospital

Lineare Abbildungen

dimension eines Untervektorraumes bestimmen

Stationäre Stoffübertragung

Polplan, Prinzip der virtuellen Verrückungen

komplexe Ungleichungen 

Bidualräume

Dualräume

Taylorpolynome

Kern und Basis

Diagonalisieren einer Matrix

Rekursive Folgen

Exponentialreihe

Darstellungsmatrizen

restglied

Basiswechsel

Gamma Funktion

<p>Für die Determinante der Matrix gilt $\det(A)=4$ und für seine Inverse $\det(A)=\frac{1}{4}$</p>

<p>Für die Determinante der Matrix gilt <mjx-container class="MathJax" jax="SVG"><svg alt="\det(A)=4" style="vertical-align: -0.566ex" xmlns="http://www.w3.org/2000/svg" width="10.748ex" height="2.262ex" role="img" focusable="false" viewBox="0 -750 4750.6 1000" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7260-TEX-N-64" d="M376 495Q376 511 376 535T377 568Q377 613 367 624T316 637H298V660Q298 683 300 683L310 684Q320 685 339 686T376 688Q393 689 413 690T443 693T454 694H457V390Q457 84 458 81Q461 61 472 55T517 46H535V0Q533 0 459 -5T380 -11H373V44L365 37Q307 -11 235 -11Q158 -11 96 50T34 215Q34 315 97 378T244 442Q319 442 376 393V495ZM373 342Q328 405 260 405Q211 405 173 369Q146 341 139 305T131 211Q131 155 138 120T173 59Q203 26 251 26Q322 26 373 103V342Z"></path><path id="MJX-7260-TEX-N-65" d="M28 218Q28 273 48 318T98 391T163 433T229 448Q282 448 320 430T378 380T406 316T415 245Q415 238 408 231H126V216Q126 68 226 36Q246 30 270 30Q312 30 342 62Q359 79 369 104L379 128Q382 131 395 131H398Q415 131 415 121Q415 117 412 108Q393 53 349 21T250 -11Q155 -11 92 58T28 218ZM333 275Q322 403 238 411H236Q228 411 220 410T195 402T166 381T143 340T127 274V267H333V275Z"></path><path id="MJX-7260-TEX-N-74" d="M27 422Q80 426 109 478T141 600V615H181V431H316V385H181V241Q182 116 182 100T189 68Q203 29 238 29Q282 29 292 100Q293 108 293 146V181H333V146V134Q333 57 291 17Q264 -10 221 -10Q187 -10 162 2T124 33T105 68T98 100Q97 107 97 248V385H18V422H27Z"></path><path id="MJX-7260-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-7260-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7260-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path><path id="MJX-7260-TEX-N-3D" d="M56 347Q56 360 70 367H707Q722 359 722 347Q722 336 708 328L390 327H72Q56 332 56 347ZM56 153Q56 168 72 173H708Q722 163 722 153Q722 140 707 133H70Q56 140 56 153Z"></path><path id="MJX-7260-TEX-N-34" d="M462 0Q444 3 333 3Q217 3 199 0H190V46H221Q241 46 248 46T265 48T279 53T286 61Q287 63 287 115V165H28V211L179 442Q332 674 334 675Q336 677 355 677H373L379 671V211H471V165H379V114Q379 73 379 66T385 54Q393 47 442 46H471V0H462ZM293 211V545L74 212L183 211H293Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-7260-TEX-N-64"></use><use xlink:href="#MJX-7260-TEX-N-65" transform="translate(556, 0)"></use><use xlink:href="#MJX-7260-TEX-N-74" transform="translate(1000, 0)"></use></g><g data-mml-node="mo" transform="translate(1389, 0)"><use xlink:href="#MJX-7260-TEX-N-28"></use></g><g data-mml-node="mi" transform="translate(1778, 0)"><use xlink:href="#MJX-7260-TEX-I-1D434"></use></g><g data-mml-node="mo" transform="translate(2528, 0)"><use xlink:href="#MJX-7260-TEX-N-29"></use></g><g data-mml-node="mo" transform="translate(3194.8, 0)"><use xlink:href="#MJX-7260-TEX-N-3D"></use></g><g data-mml-node="mn" transform="translate(4250.6, 0)"><use xlink:href="#MJX-7260-TEX-N-34"></use></g></g></g></svg></mjx-container> und für seine Inverse <mjx-container class="MathJax" jax="SVG"><svg alt="\det(A)=\frac{1}{4}" style="vertical-align: -0.781ex" xmlns="http://www.w3.org/2000/svg" width="11.412ex" height="2.737ex" role="img" focusable="false" viewBox="0 -864.9 5044.1 1209.9" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7261-TEX-N-64" d="M376 495Q376 511 376 535T377 568Q377 613 367 624T316 637H298V660Q298 683 300 683L310 684Q320 685 339 686T376 688Q393 689 413 690T443 693T454 694H457V390Q457 84 458 81Q461 61 472 55T517 46H535V0Q533 0 459 -5T380 -11H373V44L365 37Q307 -11 235 -11Q158 -11 96 50T34 215Q34 315 97 378T244 442Q319 442 376 393V495ZM373 342Q328 405 260 405Q211 405 173 369Q146 341 139 305T131 211Q131 155 138 120T173 59Q203 26 251 26Q322 26 373 103V342Z"></path><path id="MJX-7261-TEX-N-65" d="M28 218Q28 273 48 318T98 391T163 433T229 448Q282 448 320 430T378 380T406 316T415 245Q415 238 408 231H126V216Q126 68 226 36Q246 30 270 30Q312 30 342 62Q359 79 369 104L379 128Q382 131 395 131H398Q415 131 415 121Q415 117 412 108Q393 53 349 21T250 -11Q155 -11 92 58T28 218ZM333 275Q322 403 238 411H236Q228 411 220 410T195 402T166 381T143 340T127 274V267H333V275Z"></path><path id="MJX-7261-TEX-N-74" d="M27 422Q80 426 109 478T141 600V615H181V431H316V385H181V241Q182 116 182 100T189 68Q203 29 238 29Q282 29 292 100Q293 108 293 146V181H333V146V134Q333 57 291 17Q264 -10 221 -10Q187 -10 162 2T124 33T105 68T98 100Q97 107 97 248V385H18V422H27Z"></path><path id="MJX-7261-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-7261-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7261-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path><path id="MJX-7261-TEX-N-3D" d="M56 347Q56 360 70 367H707Q722 359 722 347Q722 336 708 328L390 327H72Q56 332 56 347ZM56 153Q56 168 72 173H708Q722 163 722 153Q722 140 707 133H70Q56 140 56 153Z"></path><path id="MJX-7261-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path><path id="MJX-7261-TEX-N-34" d="M462 0Q444 3 333 3Q217 3 199 0H190V46H221Q241 46 248 46T265 48T279 53T286 61Q287 63 287 115V165H28V211L179 442Q332 674 334 675Q336 677 355 677H373L379 671V211H471V165H379V114Q379 73 379 66T385 54Q393 47 442 46H471V0H462ZM293 211V545L74 212L183 211H293Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-7261-TEX-N-64"></use><use xlink:href="#MJX-7261-TEX-N-65" transform="translate(556, 0)"></use><use xlink:href="#MJX-7261-TEX-N-74" transform="translate(1000, 0)"></use></g><g data-mml-node="mo" transform="translate(1389, 0)"><use xlink:href="#MJX-7261-TEX-N-28"></use></g><g data-mml-node="mi" transform="translate(1778, 0)"><use xlink:href="#MJX-7261-TEX-I-1D434"></use></g><g data-mml-node="mo" transform="translate(2528, 0)"><use xlink:href="#MJX-7261-TEX-N-29"></use></g><g data-mml-node="mo" transform="translate(3194.8, 0)"><use xlink:href="#MJX-7261-TEX-N-3D"></use></g><g data-mml-node="mfrac" transform="translate(4250.6, 0)"><g data-mml-node="mn" transform="translate(220, 394) scale(0.707)"><use xlink:href="#MJX-7261-TEX-N-31"></use></g><g data-mml-node="mn" transform="translate(220, -345) scale(0.707)"><use xlink:href="#MJX-7261-TEX-N-34"></use></g><rect width="553.6" height="60" x="120" y="220"></rect></g></g></g></svg></mjx-container></p>

<p>Berechne zunächst $\det(A)$ mit der Regel von Sarrus</p>


<p>Berechne zunächst <mjx-container class="MathJax" jax="SVG"><svg alt="\det(A)" style="vertical-align: -0.566ex" xmlns="http://www.w3.org/2000/svg" width="6.6ex" height="2.262ex" role="img" focusable="false" viewBox="0 -750 2917 1000" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7255-TEX-N-64" d="M376 495Q376 511 376 535T377 568Q377 613 367 624T316 637H298V660Q298 683 300 683L310 684Q320 685 339 686T376 688Q393 689 413 690T443 693T454 694H457V390Q457 84 458 81Q461 61 472 55T517 46H535V0Q533 0 459 -5T380 -11H373V44L365 37Q307 -11 235 -11Q158 -11 96 50T34 215Q34 315 97 378T244 442Q319 442 376 393V495ZM373 342Q328 405 260 405Q211 405 173 369Q146 341 139 305T131 211Q131 155 138 120T173 59Q203 26 251 26Q322 26 373 103V342Z"></path><path id="MJX-7255-TEX-N-65" d="M28 218Q28 273 48 318T98 391T163 433T229 448Q282 448 320 430T378 380T406 316T415 245Q415 238 408 231H126V216Q126 68 226 36Q246 30 270 30Q312 30 342 62Q359 79 369 104L379 128Q382 131 395 131H398Q415 131 415 121Q415 117 412 108Q393 53 349 21T250 -11Q155 -11 92 58T28 218ZM333 275Q322 403 238 411H236Q228 411 220 410T195 402T166 381T143 340T127 274V267H333V275Z"></path><path id="MJX-7255-TEX-N-74" d="M27 422Q80 426 109 478T141 600V615H181V431H316V385H181V241Q182 116 182 100T189 68Q203 29 238 29Q282 29 292 100Q293 108 293 146V181H333V146V134Q333 57 291 17Q264 -10 221 -10Q187 -10 162 2T124 33T105 68T98 100Q97 107 97 248V385H18V422H27Z"></path><path id="MJX-7255-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-7255-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7255-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mo"><use xlink:href="#MJX-7255-TEX-N-64"></use><use xlink:href="#MJX-7255-TEX-N-65" transform="translate(556, 0)"></use><use xlink:href="#MJX-7255-TEX-N-74" transform="translate(1000, 0)"></use></g><g data-mml-node="mo" transform="translate(1389, 0)"><use xlink:href="#MJX-7255-TEX-N-28"></use></g><g data-mml-node="mi" transform="translate(1778, 0)"><use xlink:href="#MJX-7255-TEX-I-1D434"></use></g><g data-mml-node="mo" transform="translate(2528, 0)"><use xlink:href="#MJX-7255-TEX-N-29"></use></g></g></g></svg></mjx-container> mit der Regel von Sarrus</p>


<p>\begin{align*}</p>
<p>\operatorname{det}(A) &amp;=\operatorname{det}\left(\begin{array}{ccc}</p>
<p>1 &amp; 3 &amp; 4 \\</p>
<p>2 &amp; 0 &amp; 1 \\</p>
<p>3 &amp; 1 &amp; 2</p>
<p>\end{array}\right) \\</p>
<p>&amp;=0+9+8-0-1-12 \\</p>
<p>&amp;=4</p>
<p>\end{align*}</p>


<p>Berechne nun $\operatorname{det}\left(A^{-1}\right)$</p>


<p>Berechne nun <mjx-container class="MathJax" jax="SVG"><svg alt="\operatorname{det}\left(A^{-1}\right)" style="vertical-align: -0.791ex" xmlns="http://www.w3.org/2000/svg" width="9.446ex" height="2.713ex" role="img" focusable="false" viewBox="0 -849.5 4175.3 1199" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7257-TEX-N-64" d="M376 495Q376 511 376 535T377 568Q377 613 367 624T316 637H298V660Q298 683 300 683L310 684Q320 685 339 686T376 688Q393 689 413 690T443 693T454 694H457V390Q457 84 458 81Q461 61 472 55T517 46H535V0Q533 0 459 -5T380 -11H373V44L365 37Q307 -11 235 -11Q158 -11 96 50T34 215Q34 315 97 378T244 442Q319 442 376 393V495ZM373 342Q328 405 260 405Q211 405 173 369Q146 341 139 305T131 211Q131 155 138 120T173 59Q203 26 251 26Q322 26 373 103V342Z"></path><path id="MJX-7257-TEX-N-65" d="M28 218Q28 273 48 318T98 391T163 433T229 448Q282 448 320 430T378 380T406 316T415 245Q415 238 408 231H126V216Q126 68 226 36Q246 30 270 30Q312 30 342 62Q359 79 369 104L379 128Q382 131 395 131H398Q415 131 415 121Q415 117 412 108Q393 53 349 21T250 -11Q155 -11 92 58T28 218ZM333 275Q322 403 238 411H236Q228 411 220 410T195 402T166 381T143 340T127 274V267H333V275Z"></path><path id="MJX-7257-TEX-N-74" d="M27 422Q80 426 109 478T141 600V615H181V431H316V385H181V241Q182 116 182 100T189 68Q203 29 238 29Q282 29 292 100Q293 108 293 146V181H333V146V134Q333 57 291 17Q264 -10 221 -10Q187 -10 162 2T124 33T105 68T98 100Q97 107 97 248V385H18V422H27Z"></path><path id="MJX-7257-TEX-N-2061" d=""></path><path id="MJX-7257-TEX-SO-28" d="M152 251Q152 646 388 850H416Q422 844 422 841Q422 837 403 816T357 753T302 649T255 482T236 250Q236 124 255 19T301 -147T356 -251T403 -315T422 -340Q422 -343 416 -349H388Q359 -325 332 -296T271 -213T212 -97T170 56T152 251Z"></path><path id="MJX-7257-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7257-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-7257-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path><path id="MJX-7257-TEX-SO-29" d="M305 251Q305 -145 69 -349H56Q43 -349 39 -347T35 -338Q37 -333 60 -307T108 -239T160 -136T204 27T221 250T204 473T160 636T108 740T60 807T35 839Q35 850 50 850H56H69Q197 743 256 566Q305 425 305 251Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mi"><use xlink:href="#MJX-7257-TEX-N-64"></use><use xlink:href="#MJX-7257-TEX-N-65" transform="translate(556, 0)"></use><use xlink:href="#MJX-7257-TEX-N-74" transform="translate(1000, 0)"></use></g><g data-mml-node="mo" transform="translate(1389, 0)"><use xlink:href="#MJX-7257-TEX-N-2061"></use></g><g data-mml-node="mrow" transform="translate(1555.7, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-7257-TEX-SO-28"></use></g><g data-mml-node="msup" transform="translate(458, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-7257-TEX-I-1D434"></use></g><g data-mml-node="TeXAtom" transform="translate(750, 363) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-7257-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(778, 0)"><use xlink:href="#MJX-7257-TEX-N-31"></use></g></g></g><g data-mml-node="mo" transform="translate(2161.7, 0)"><use xlink:href="#MJX-7257-TEX-SO-29"></use></g></g></g></g></svg></mjx-container></p>


<p>Nutze: $\operatorname{det}\left(A^{-1}\right) = \det(A)^{-1}$</p>


<p>Nutze: <mjx-container class="MathJax" jax="SVG"><svg alt="\operatorname{det}\left(A^{-1}\right) = \det(A)^{-1}" style="vertical-align: -0.791ex" xmlns="http://www.w3.org/2000/svg" width="21.221ex" height="2.713ex" role="img" focusable="false" viewBox="0 -849.5 9379.6 1199" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7258-TEX-N-64" d="M376 495Q376 511 376 535T377 568Q377 613 367 624T316 637H298V660Q298 683 300 683L310 684Q320 685 339 686T376 688Q393 689 413 690T443 693T454 694H457V390Q457 84 458 81Q461 61 472 55T517 46H535V0Q533 0 459 -5T380 -11H373V44L365 37Q307 -11 235 -11Q158 -11 96 50T34 215Q34 315 97 378T244 442Q319 442 376 393V495ZM373 342Q328 405 260 405Q211 405 173 369Q146 341 139 305T131 211Q131 155 138 120T173 59Q203 26 251 26Q322 26 373 103V342Z"></path><path id="MJX-7258-TEX-N-65" d="M28 218Q28 273 48 318T98 391T163 433T229 448Q282 448 320 430T378 380T406 316T415 245Q415 238 408 231H126V216Q126 68 226 36Q246 30 270 30Q312 30 342 62Q359 79 369 104L379 128Q382 131 395 131H398Q415 131 415 121Q415 117 412 108Q393 53 349 21T250 -11Q155 -11 92 58T28 218ZM333 275Q322 403 238 411H236Q228 411 220 410T195 402T166 381T143 340T127 274V267H333V275Z"></path><path id="MJX-7258-TEX-N-74" d="M27 422Q80 426 109 478T141 600V615H181V431H316V385H181V241Q182 116 182 100T189 68Q203 29 238 29Q282 29 292 100Q293 108 293 146V181H333V146V134Q333 57 291 17Q264 -10 221 -10Q187 -10 162 2T124 33T105 68T98 100Q97 107 97 248V385H18V422H27Z"></path><path id="MJX-7258-TEX-N-2061" d=""></path><path id="MJX-7258-TEX-SO-28" d="M152 251Q152 646 388 850H416Q422 844 422 841Q422 837 403 816T357 753T302 649T255 482T236 250Q236 124 255 19T301 -147T356 -251T403 -315T422 -340Q422 -343 416 -349H388Q359 -325 332 -296T271 -213T212 -97T170 56T152 251Z"></path><path id="MJX-7258-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7258-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-7258-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path><path id="MJX-7258-TEX-SO-29" d="M305 251Q305 -145 69 -349H56Q43 -349 39 -347T35 -338Q37 -333 60 -307T108 -239T160 -136T204 27T221 250T204 473T160 636T108 740T60 807T35 839Q35 850 50 850H56H69Q197 743 256 566Q305 425 305 251Z"></path><path id="MJX-7258-TEX-N-3D" d="M56 347Q56 360 70 367H707Q722 359 722 347Q722 336 708 328L390 327H72Q56 332 56 347ZM56 153Q56 168 72 173H708Q722 163 722 153Q722 140 707 133H70Q56 140 56 153Z"></path><path id="MJX-7258-TEX-N-28" d="M94 250Q94 319 104 381T127 488T164 576T202 643T244 695T277 729T302 750H315H319Q333 750 333 741Q333 738 316 720T275 667T226 581T184 443T167 250T184 58T225 -81T274 -167T316 -220T333 -241Q333 -250 318 -250H315H302L274 -226Q180 -141 137 -14T94 250Z"></path><path id="MJX-7258-TEX-N-29" d="M60 749L64 750Q69 750 74 750H86L114 726Q208 641 251 514T294 250Q294 182 284 119T261 12T224 -76T186 -143T145 -194T113 -227T90 -246Q87 -249 86 -250H74Q66 -250 63 -250T58 -247T55 -238Q56 -237 66 -225Q221 -64 221 250T66 725Q56 737 55 738Q55 746 60 749Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mi"><use xlink:href="#MJX-7258-TEX-N-64"></use><use xlink:href="#MJX-7258-TEX-N-65" transform="translate(556, 0)"></use><use xlink:href="#MJX-7258-TEX-N-74" transform="translate(1000, 0)"></use></g><g data-mml-node="mo" transform="translate(1389, 0)"><use xlink:href="#MJX-7258-TEX-N-2061"></use></g><g data-mml-node="mrow" transform="translate(1555.7, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-7258-TEX-SO-28"></use></g><g data-mml-node="msup" transform="translate(458, 0)"><g data-mml-node="mi"><use xlink:href="#MJX-7258-TEX-I-1D434"></use></g><g data-mml-node="TeXAtom" transform="translate(750, 363) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-7258-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(778, 0)"><use xlink:href="#MJX-7258-TEX-N-31"></use></g></g></g><g data-mml-node="mo" transform="translate(2161.7, 0)"><use xlink:href="#MJX-7258-TEX-SO-29"></use></g></g><g data-mml-node="mo" transform="translate(4453.1, 0)"><use xlink:href="#MJX-7258-TEX-N-3D"></use></g><g data-mml-node="mo" transform="translate(5508.9, 0)"><use xlink:href="#MJX-7258-TEX-N-64"></use><use xlink:href="#MJX-7258-TEX-N-65" transform="translate(556, 0)"></use><use xlink:href="#MJX-7258-TEX-N-74" transform="translate(1000, 0)"></use></g><g data-mml-node="mo" transform="translate(6897.9, 0)"><use xlink:href="#MJX-7258-TEX-N-28"></use></g><g data-mml-node="mi" transform="translate(7286.9, 0)"><use xlink:href="#MJX-7258-TEX-I-1D434"></use></g><g data-mml-node="msup" transform="translate(8036.9, 0)"><g data-mml-node="mo"><use xlink:href="#MJX-7258-TEX-N-29"></use></g><g data-mml-node="TeXAtom" transform="translate(389, 363) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-7258-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(778, 0)"><use xlink:href="#MJX-7258-TEX-N-31"></use></g></g></g></g></g></svg></mjx-container></p>


<p>\begin{align*}</p>
<p>\operatorname{det}\left(A^{-1}\right) &amp;=\operatorname{det}(A)^{-1} \\</p>
<p>&amp;=\frac{1}{\det(A)} \\</p>
<p>&amp;=\frac{1}{4}</p>
<p>\end{align*}</p>

<p>Berechne die Determinante von $A$ und $A^{-1}$.</p>
<p></p>
<p>\begin{align*}A=\left(\begin{array}{lll}</p>
<p>1 &amp; 3 &amp; 4 \\</p>
<p>2 &amp; 0 &amp; 1 \\</p>
<p>3 &amp; 1 &amp; 2</p>
<p>\end{array}\right)\end{align*}</p>

<p>Berechne die Determinante von <mjx-container class="MathJax" jax="SVG"><svg alt="A" style="vertical-align: 0" xmlns="http://www.w3.org/2000/svg" width="1.697ex" height="1.62ex" role="img" focusable="false" viewBox="0 -716 750 716" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7252-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="mi"><use xlink:href="#MJX-7252-TEX-I-1D434"></use></g></g></g></svg></mjx-container> und <mjx-container class="MathJax" jax="SVG"><svg alt="A^{-1}" style="vertical-align: 0" xmlns="http://www.w3.org/2000/svg" width="3.854ex" height="1.887ex" role="img" focusable="false" viewBox="0 -833.9 1703.7 833.9" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7253-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7253-TEX-N-2212" d="M84 237T84 250T98 270H679Q694 262 694 250T679 230H98Q84 237 84 250Z"></path><path id="MJX-7253-TEX-N-31" d="M213 578L200 573Q186 568 160 563T102 556H83V602H102Q149 604 189 617T245 641T273 663Q275 666 285 666Q294 666 302 660V361L303 61Q310 54 315 52T339 48T401 46H427V0H416Q395 3 257 3Q121 3 100 0H88V46H114Q136 46 152 46T177 47T193 50T201 52T207 57T213 61V578Z"></path></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g data-mml-node="math"><g data-mml-node="msup"><g data-mml-node="mi"><use xlink:href="#MJX-7253-TEX-I-1D434"></use></g><g data-mml-node="TeXAtom" transform="translate(750, 363) scale(0.707)" data-mjx-texclass="ORD"><g data-mml-node="mo"><use xlink:href="#MJX-7253-TEX-N-2212"></use></g><g data-mml-node="mn" transform="translate(778, 0)"><use xlink:href="#MJX-7253-TEX-N-31"></use></g></g></g></g></g></svg></mjx-container>.</p>
<p></p>
<p><mjx-container class="MathJax" jax="SVG"><svg alt="\begin{align*}A=\left(\begin{array}{lll}
1 & 3 & 4 \\
2 & 0 & 1 \\
3 & 1 & 2
\end{array}\right)\end{align*}" style="vertical-align: -3.733ex" xmlns="http://www.w3.org/2000/svg" width="16.592ex" height="8.597ex" role="img" focusable="false" viewBox="0 -2150 7333.6 3800" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="MJX-7254-TEX-I-1D434" d="M208 74Q208 50 254 46Q272 46 272 35Q272 34 270 22Q267 8 264 4T251 0Q249 0 239 0T205 1T141 2Q70 2 50 0H42Q35 7 35 11Q37 38 48 46H62Q132 49 164 96Q170 102 345 401T523 704Q530 716 547 716H555H572Q578 707 578 706L606 383Q634 60 636 57Q641 46 701 46Q726 46 726 36Q726 34 723 22Q720 7 718 4T704 0Q701 0 690 0T651 1T578 2Q484 2 455 0H443Q437 6 437 9T439 27Q443 40 445 43L449 46H469Q523 49 533 63L521 213H283L249 155Q208 86 208 74ZM516 260Q516 271 504 416T490 562L463 519Q447 492 400 412L310 260L413 259Q516 259 516 260Z"></path><path id="MJX-7254-TEX-N-3D" d="M56 347Q56 360 70 367H707Q722 359 722 347Q722 336 708 328L390 327H72Q56 332 56 347ZM56 153Q56 168 72 173H708Q722 163 722 153Q722 140 707 133H70Q56 140 56 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Dies ist eine interaktive Aufgabe zu: Regel von Sarrus (3x3) mit praktischen Tipps zum Lösen und einer Zusammenfassung der nötigen Theorie

Determinanten bestimmen - Regel von Sarrus (3x3) | Aufgabe mit Lösung


<h2 class="content_sub_heading">Determinate einer 3x3 Matrix über Sarrus</h2>
<ol>
<li>Schreibe die ersten beiden Spalten der Matrix noch einmal rechts neben die Matrix.<br />
<p>\begin{align*}</p>
<p>\\</p>
<p>\quad A:=\left(\begin{array}{lll}</p>
<p>a &amp; b &amp; c \\</p>
<p>d &amp; e &amp; f \\</p>
<p>g &amp; h &amp; i</p>
<p>\end{array}\right)</p>
<p>\Rightarrow</p>
<p>\begin{array}{|lll|ll}</p>
<p>\color{#5FAFD2}{a} &amp;\color{#AAC869}{ b} &amp;\color{#DC6955}{c} &amp;a&amp;b\\</p>
<p>d &amp;\color{#5FAFD2}{ e} &amp;\color{#AAC869}{ f} &amp;\color{#DC6955}{d}&amp;e\\</p>
<p>g &amp; h &amp; \color{#5FAFD2}{i}&amp;\color{#AAC869}{g}&amp;\color{#DC6955}{h}</p>
<p>\end{array} \qquad \qquad</p>
<p>\begin{array}{|lll|ll}</p>
<p>a &amp;b &amp;\color{#5FAFD2}{c} &amp; \color{#AAC869}{a}&amp;\color{#DC6955}{b}\\</p>
<p>d &amp;\color{#5FAFD2}{e} &amp;\color{#AAC869}{f} &amp;\color{#DC6955}{d}&amp;e\\</p>
<p>\color{#5FAFD2}{g} &amp; \color{#AAC869}{h} &amp; \color{#DC6955}{i}&amp;g&amp;h</p>
<p>\end{array}</p>
<p>\end{align*}<br /><br /></p>
</li>
<li>
<p>Addiere die Produkte der entstandenen drei Diagonalen von links oben nach rechts unten und subtrahiere dann die Produkte der Diagonalen von rechts oben nach links unten:</p>
<p>\begin{align*}</p>
<p>\quad \Rightarrow\det(A) =\color{#5FAFD2}{a e i} \ \color{#000}{+} \ \color{#AAC869}{b f g} \ \color{#000}{+} \ \color{#DC6955}{c d h} \ \color{#000}{-} \ \color{#DC6955}{b d i} \ \color{#000}{-} \ \color{#AAC869}{a f h} \ \color{#000}{-} \ \color{#5FAFD2}{c e g}</p>
<p>\end{align*}</p>
</li>
</ol>


Aufgabenstellung:

Lösungsweg:

Lösung: