Inverse of 2x2 matrix

[@Killerkarabao]

funny how we all come to this guy before we have an exam , thanks man ... you are a live saver

[@godace4964]

TRUEEE

[@lillymoreau7721]

sameeeee!!! I lost the only packet he gave us on matrices.

[@Zeegi]

😂😂seriously man!!!

[@JohnMarkIsaacMadison]

@1:10 Explanation of what is on screen over. @1:25: About to find Determinant == (a*d) - (b*c) @3:05: Calculating the Inverse == Swap: a&b, Make Negative:c&d (The matrix in top-right of screen) @4:19: ANSWER: Multiply each element of matrix by 1/|A| (The determinant) I was having a bit of trouble figuring out that last part because I thought that 1/|A| might be used as a 2X1 matrix or something. Thanks for this video!

[@TheDeanBlain]

Still better than my teacher. Thanks man

[@ludong2329]

About the math Matrix, this is most clear and enlightening instruction I have ever seen on the web. Many thanks!

[@anythinglately]

best easiest explanation ever !!!!! straight to the point no chaser !!! lol!

[@screamorock14]

So well explained. Thoroughly and patiently

[@janeinflushing]

The absolute value sign is really misleading. 1/|A| means determinant A, there is nothing about absolute value. When I try to solve X+2Y=5 3X+5Y=14, I find the absolute value sign misleads me.

[@bilalasad3164]

really sorry a silly question but as you said A,B,C,D or D, -B, C, -A As the minus symbols are positive let say if the matrice where A,-B, C D Would you change the -B to a positive B in the inverse if this makes sense!

[@stevesawyer7106]

yep once you put the minus in front of it it becomes positive (negative/negative=positive)

[@clousehands5582]

Dude I agree with omar this is something good you all do sometimes instructors just cannot get the concept across due to their teaching style all you do is layout the facts and bam it makes sense thanks for everything.

[@mcneilmoe]

congrats, you are my new algebra 2 teacher!

[@ianjaydelosangeles3173]

I thank you for this :) but i most likely to give thanks to the one who theoterized this i honor him for his contribution.

[@FahadShah19]

it's 2018 and I am repeating this subject for the 3rd time thanks to this guy, tmr is my test and just learned in 4min thanks Man

[@lasfa01]

thank you so much it's better than what my teacher did god bless you

[@FadiMFK]

i used to think it was complicated, but the way u explained it so CLEAR... thx man :)

[@occupytosavetheworld]

wow, you're an excellent teacher.

[@CINEBROSPICTURES]

I wish you were my teacher ...

[@shimaarageh9360]

Thank you for your effort it's perfect

[@IsJdog911]

Thank you because you saved my exam 😁

[@hemangvishrut9944]

Damn!!! You made it so simple. Regards from India

[@makeupworld]

what if you already have a negative was place in front of the 4 and 1 in matrix "B=", would you then not put the negative in when putting them in B-1 matrix.

[@blakebellamy82]

I've spent forever trying to figure this out on MyMathLab and he did it in 5 minutes. URG!

[@ultralaserblast381]

IS IT JUST ME, OR DOES MATH LAB SUCK AT EXPLAINING WHAT TO DO !??!?!?!?!

[@crayton696]

AL onTWITCH IKR

[@josephpmans]

AL onTWITCH my mathlab and all the other online homework programs are garbage

[@zachboi13]

blakebellamy82 I went through MAC1033, mac1105 and mac1117 with mymathlab and it didn't equip me for mac1147. Fuck mymathlab and fuck the teachers who teach using it. A kick in the ass with a real professor who works from the book and their own design is what you need.

[@nickhawes2523]

Same here!

[@matthewwatts5955]

i learned more here than with my teacher in 2 days of lesson thank you so much

[@jonathansimis661]

you changed my life, I'll never be the same

[@TheClawMaster_1]

took me so long at school. took 4 minutes here to understand... we are wasting money at school.. anyway thanks mate

[@nikitajulien5409]

Where does the negative sign comes in

[@zayde199]

Saved me a lot of time. Thank you very much!

[@Zeegi]

This video was really very clear and helpful !!!! Tnxx sir👍👍

[@L2Strike2000]

straight to the point bro thx for your help man

[@eliminshrintar]

My prof spent over a half hour trying to brute force the theory and official proof at us. You showed us how to just do it in less than five minutes. Why am I paying that man over a $1000 for his course????

[@siddharthmanchanda7971]

you helped me when my IGCSE exams are near thanks a lot even i was nt able to understand my teacher

[@scarthrux7344]

Siddharth MANCHANDA late comment. But how was your IGCSE boards? I'm currently doing my IGCSE, wanna know how badly I'll fail lol

[@mdtauqeer2174]

Thanks sir easy way to solve inverse

[@scarthrux7344]

MAN I LOVE YOU SO FREAKING MUCH

[@Adrian_Gutier]

Thank you very much. Very clear and very simple way to explain things. Thank you.

[@yasithw845]

cool explanation...🎆👏🏻👏🏻🙌🏻

[@liyaharmstrong5049]

so if it is a positive n negative want sign u have to put

[@ahmademad5779]

My boy I love u ❤️ 😭

[@nefenzinga]

Yo my professor makes this so extra lorddddtttt ... Thank you sir

[@bibekbanjara4279]

how to find the matrix if the inverse of it is given??

[@ble45ed56in45]

better than my lecturer

[@pranavsaikamarsu2256]

why did u take the negative sign for b and c

[@anteater2536]

top right is the formula

[@richarddemeny611]

Thanks, easy explanation!

[@Brisun]

amazing thanks

[@Truthkills002]

This was so effective i felt like i was cheating!!! thank you so much!!!

[@bsc.biotechnology7065]

thank u it helped me alot well i really suck at math

[@santhoshwaran8116]

Bro this method name is elementary transformation or some other name?

[@rahulvaya4897]

What should i do if the determinant is 0

[@mattjoe98]

Rahul Vaya if the determinant is 0 then the matrix has no inverse, 2x2 matrices only have inverses if the determinant is nonzero

[@rahulvaya4897]

Okay. Thanks

[@yhebeccabby]

BOMB!!!!!! YOU ARE THE BEST!!

[@mosesjohnson8288]

Thank u very much this video really helped me

[@brigtalls1311]

Thanks! You're a legend!

[@김세린-t9w]

Thank you this helped a lot!

[@MrJojojo940]

very nice thx man :D it helpd me a lot

[@Sp33nGhaR]

You are a legend

[@jjeon9850]

What's the proof for this formula? And is there a name for it? Nvm.

[@FarisMQ]

Thank you . Great vid but it didn't need to be 4 min long

[@f00tballfever]

YOU ARE AMAZING!!!!!

[@MissNimmiDarlin]

Thanks very much!

[@umarmehmood6595]

Thanks helped me alot

[@godace4964]

he should open a school xd he's a genius

[@marielalfonso5083]

Thank you! May God bless you. :))

[@artisticroshni]

thank you very much .it help lot

[@wamakalepatrick1871]

so interesting math life

[@madyas98]

who else learned how to do this just off the thumbnail

[@salaheddinebekrar3616]

Thanks so much

[@Yousef306]

you are the BEST :)

[@xegaihadgu3582]

gosh.. I Wish this trick applied for any size of matrix.

[@linaria123sgs]

yeay..thanks.

[@shahabuddinshaikh1274]

Thank U very much.

[@DavinderSingh-xm2ms]

plz solve (1 3 2 6)

[@sandevweerasinghe4014]

I don't think it is possible as the scalar is zero. I might be wrong but please do check the sum again

[@omeraksu1580]

wtf i do with gauß 3 hours and i didnt had any solution just false results. I just look at these and im done. Ty bro

[@i6tir]

THANK YOU!

[@symfora1495]

so i tried to prove my inverse matrix and i get 0.99 0 0 0.99 instead of 1 0 0 1 .....I don't even know anymore lol should I just round it off? The given was F = 2 -1 1 -2

[@soapmctavish342]

2019 its helpful.

[@tahazafar300]

well done

[@DerangedIntellectual9]

4.5 min of this guy > 2 hr of TA's bs

[@ble45ed56in45]

thank you

[@Eddy1westside]

AWESOME THANKS

[@sawensh8223]

thanks

[@haolinfang839]

you kind of sound like tyler oakley...O.o

[@RS-gq5ws]

Haolin Fang no..

[@Ranique10]

GENIUS!

[@Todosepuede08]

GOOD HELP

[@NehaGupta-if7se]

Thanks a lot...

[@bowser3535]

This video is misleading, if the determinant is ever negative you don't take the absolute value when it's in the denominator, it will give you a different answer...

[@Divesk8torz]

Thank you!!!!

[@nguyen881]

thanks!

[@surakshit8994]

woow awesome

[@blazejames47]

I have no fucking idea what this guy is talking about

[@muhammadhassaan8464]

:)

[@FarisMQ]

Thank you . Great vid but it didn't need to be 4 min long

[@Dhummay]

thanks

[@samarthsaxena2703]

thank you so much

[@lykzjrmaf3509]

Thanks a lot

[@Giesela0815]

thanks!

[@RS-gq5ws]

thanks