Inverse of a 3x3 Matrix

[@TheOrganicChemistryTutor]

Matrices - Free Formula Sheet: bit.ly/3UE9Cmk Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections Next Video: kzbin.info/www/bejne/aYOyq3pso5msg8U

[@ADAG4EVER]

question um isn't using the formula A^(-1)= 1/|A| (adj A) where |A| is the determinant and adj A is adjoint of the matrix to be inversed. this also make sure not to make mistake on sign of the number in the invese matrix. i would apreciate it if you let me know thanks.

[@IshuSingh-k7f]

it is so easy to make small mistakes in these types of questions.

[@tarekkerbedj1031]

that's why linear algebra is my least favorite math subject

[@PenandPaperScience]

There is a more systematic approach to calculating the inverse of a matrix though. I uploaded a video where I go through such exercises step by step, it might help :) kzbin.info/www/bejne/aILbZH2nfJpmbas

[@Supergamer-ex2yr]

He did too... 2x1does not equal 1... 8:25

[@davidschori2417]

@@Supergamer-ex2yr He should have done -1/2R2 + R1

[@Supergamer-ex2yr]

@@davidschori2417 Exactly

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Same for my degree in economy

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I know bro. I started using this channel in high school for chemistry and it's still relevant for cs.

[@derrickt8181]

facts

[@owenjohnson4155]

I appreciate that you leave the mistakes in the video. Helps to understand what to do if things go wrong

[@jth5726]

I don't. I just want to quickly check one of the steps without being forced to watch the entire video in case they have to correct themselves later on. Thanks for letting me know though.

[@kevinsweeney2809]

You have no idea how much you've helped me with chemistry and math over the years. Thank you :)

[@PenandPaperScience]

Long live online education ;D

[@brcarter1111]

After seeing these in my calculus class, I wanted to drop the course. After seeing him do them, I swear to god they are actually kinda fun, like math sudoku puzzles or something.

[@Alpffine]

wtf I'm completely different, I HATE matrices.

[@MK-it7wk]

I agree. It’s actually easy compared to most of the other things as there’s no complicated formula to use.

[@Sibasish07]

Wow we do this in our linear algebra class

[@starmanssciencechannel1834]

Weirdly we did calculus before we even touched matricies

[@nbell2238]

Its kinda fun but if you fight against time, its gonna be a death for you. I only have 1 hour 30 minutes for my paper, 7 questions to solves which one of them is matrices

[@karla.garcia]

You might be a wizard. I was stuck on a problem and had already done some 3x3 matrices but this problem was giving me a lot of trouble. I watched maybe 3 minutes of this video and almost immediately was able to break through the problem. Our numbers were not similar in any way. Thank you Mr. Wizard.

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Not boss, LEADER

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[@ricardooviedovaldivia9440]

This video is timeless, I'm very thankful that you take the time to explain every single step of every single topic. Keep it up! :)

[@ChalcolithicPrizim]

I like your straightforward approach to finding the inverse matrix. I have only one problem with this: the leading row in an operation should always be the row where the operation is taking place, like this -> R2-R1 -> which means that the second row is where the first row is being subtracted from. Doing this helps me to avoid ambiguity.

[@Sagitarria]

yeah for these matrix videos i just go from top to bottom, left to right, using the pivots. and then check to see if he got the same answer I did

[@josuedominguez770]

As much as I am thankful for this video, for helping me through my struggles with math, I do believe that I have found a problem. At 7:59, we are supposed to multiply 2 with 1 and then subtract 0 from the sum. So 2 times 1 is 2, minus 0 is still equal to 2. I apologize for any disturbances, but....math is frustrating. (EDIT) I apologize for the cries and outbursts. I was frustrated, it is the middle of the night. I'll finish this one problem, and it is the bed for me.

[@fumanimhlongo8353]

i also noticed that

[@remtan7385]

@@fumanimhlongo8353 yeah i almost lost my shit right here, im already struggling in further maths and this dude did the simple mistake which questioned my maths itself😂 i was so confused lmao

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I have used this channel to get throught Calculus 1 and 2, and computer science Mathematics 1 and 2, and statistics courses on university in Norway. Just want to say thanks for helping me :).

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I am 10th grade in Romania 😭

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Because the 4 person is the lecturer

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that was a very good video, i was at uni and my professor jsut kicked me out of lesson. Then thank to you, i could understand the lesson. Thanks :)

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today my lecturer will teach me about this.... instead of listening to him for 2 hours, I would rather watch your 15 minutes video, so I'm not be confused like my other classmates

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once again saving my high school career love you man!

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I love how I learn more on here than I do in my actual algebra 2 class, thanks

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Thank you so much The Easy University of the organic chemistry tutor.

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My Precalc teacher tried to teach this, and she did a horrible job. Thank you for carrying me in Math.

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[@_hairpower6360]

i appreciate all of your videos. you really helped me through my college algebra coourse

[@georgesadler7830]

MR. Organic Chemistry Tutor ,thank you for a solid explanation and analysis on finding the Inverse of a 3X3 Matrix.

[@LearnAndGrowOnline]

Please see my 2*2 matrices and advise me kzbin.info/www/bejne/jH3EeGeXZZJ0nNE

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Thats why he's the goat

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[@Hlle120]

you have maistack at 8:08 it supposed to be 2 not 1 because 2(R1) - R2 =2 not 1

[@Dedeepya9]

Same doubt

[@Sarcastican_]

Thank you. Seriously. My teacher didn't really explain this all too well and I thought I was losing my shit when they started talking about the matrix and Neo and blue pill/red pill and Andrew Tate. I still don't even know how or what I can use this for (other than maybe computer science), but at least you helped me with the test.

[@kevinwhitehead1111]

It's also useful in chemistry.

[@kace5830]

u can use it to escape the matrix

[@muhammadisayidkabiito8916]

I have final math exam on matrices and this method was easier than the method my professor taught in class. Thanks

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I should invite you to my graduation 😂😂 you're the only reason I'll graduate not my actual lecturers

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I hope you are my professor in Linear Algebra. Your explanation is very clear.

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You explain it so well and make it easy to understand. I wish I could give my tuition to you instead of my lousy, careless professor.

[@okeuwechue9238]

Thanks. A very simplified alternative to the "product of determinant reciprocal and adjoint" technique

[@saki7952]

The determinant Technique is alot easier than this one

[@kathibethsaimoni]

Thanks so much

[@ZqTi0]

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this guy will never not sound like a high-schooler

[@lezaremedia]

my question is that on 8:oo you multiplyed row 1 by 2 and substract it by row 2. so on the first column you multiply no 1 by two and u substruct it by zero (2*1 - 0) . it should be 2. how could it be one ?

[@alphahenry4908]

same here..... thats where I don't get it.. it should be 2

[@studente_luissgc4586]

@@alphahenry4908 he made a mistake we need to mutiply row 2 by 1/2 and then substract row 1 by Row 2

[@geehighlights3402]

spot one me got that as well

[@jerrysterling4432]

I was legit smashing my head at the table like... this just undid all the progress I thought I made xD

[@jerrysterling4432]

@@studente_luissgc4586 Wouldn't you just multiply row 2 by 1/4th and skip all that extra stuff?

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The video is done with great deliberation and detail in a step by step manner that even an idiot like me can understand it. AWESOME!

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And again you save me😁....thanks and God bless

[@abogans9366]

guys practice these kinds of questions so that you can solve it faster i had two similar questions to this in my last quiz and had to solve the whole quiz in 50 minutes

[@lok-seelam2947]

the his order of operation is wrong. If he is subtracting R1 from R3 is should be r3-r1

[@samud7041]

Mmmm depends if we dealing with figures above or below the diagonal 1 1 1 l think 🤗

[@vahngaming7107]

actually its same... it depends on where you apply the operation coz you have the freedom to do so.

[@medotedo8410]

Yes the row you want to change should be mentioned first OR you should explicitly write it as R1-R3 --> R3 Where R is a shortcut for row.

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Yes your right

[@tanumishra8951]

​@@medotedo8410true ...I got confused

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thank so much if they can make you a lectures of every universities

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thanks you help me at the right time thank you🙏🙏

[@RayRay-yt5pe]

Man, I have always loved your video. Thanks a lot.

[@SM-qn7sr]

It’s easier to work on 1’s first, then focus on turning the other parts into 0s.

[@ianmendoza8599]

why?

[@Chrisymcmb]

Are the row operations performed always performed in that exact sequence or is there a dynamic logic that he is applying (for a 3X3 matrix)?

[@insarkarypbekov9921]

Doesn’t matter already, but there is a dynamic logic

[@Chrisymcmb]

@@insarkarypbekov9921 It does, thank you :)

[@lilgoldenboi7303]

i find it funny that this video is meant for precalc students but this is a big help for me who is in a linear algrebra class, precalc was so long ago I had forgotten how matrices worked

[@dilostofong8779]

2x1-0=1??? (8'7'')

[@rootboy5557]

I know man! Baffled on that one...

[@TrentTube]

I believe he did that incorrectly.

[@brcarter1111]

ya at 7:58 he clearly made a mistake. It happens in these stupid things, there are like a page of calculations that ALL have to be correct. Not a big deal.

[@DementedLycan]

Okay, I'm not going crazy...

[@suhrobahmedov394]

He should have multiplied row two by 1/4 which would have given him 0 1 0 I 1 1 1 and then row one minus row two multiplied by 2 which would have resulted in 1 0 0 I 2 2 3.

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OMG, this was the best explanation.

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brother may god reward you. thank you so much man.

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so calm even when making mistakes, I wishhhhhh I have that confidence😖😖

[@lyricbrushier7922]

HOW DO YOU KNOW WHAT ORDER TO GO IN WHAT DO YOU DO FIRST

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taking differential equations with matrix methods now and this is a topic. Thanks for giving me the intuition to solve these!

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you are the legend himself

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If youtube classes conducted exams and gave certificates, no one would go to regular universities

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ur videos are so helpful!!

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I'm doing my bachelors in math and let me say this...organic chemistry is an absolute lifesaver.

[@maxmaxwell4211]

Is there a specific order that i can follow? Like should i invert 0 first or something like that.

[@fromdil6470]

Thanks for making it crystal clear.

[@TheAntonio6579]

Oh lord I'm gonna have to remember this for tomorrow exam #believe I don't fuck it up

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I hope your exam went well. I need to do the same for my final exam (today in an hour)!

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I like the way you explain it... am now ok in solving it...thanks so much

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this matrix help solve systemic equation , from video x = a-2b-c y=-2a+c z=a-b question is to find values of a,b,c the form of x,y,z (inverted matrix) a= x+y+2z b=x+y+z c=2x+3y+4z

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you are alone in this one bro 🙏😭

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I hope you get everything you want in life

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am i the only one who needs this in 11th grade

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woww ur brriantr teacher forever thanks

[@lukakl.]

two times 1 - 0 = 1??

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I have gaslit myself into thinking your wrong answers were correct so much I'm starting to question my own masculinity

[@Priest_isking]

😂😂😂😂😂😂

[@arafahabiodun4034]

There’s a mistake at 8:02 2*1=2+0=2 not 0 thank you

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Bro you save my life 😍

[@Drhouse135]

I am new at matrices, and I have a question. Do we really need to do all of this for just one question? Or is this the longest way to do it?

[@bmzaron713]

Hey guys, if you're starting out with this, it is really easy to make addition, subtraction, etc mistakes.. Please don't beat yourself up over it

[@ruthkana]

Thanks alot man you're the best.👍

[@mosesmoses3908]

2 times 1 and minus o stay 1at 8:2. How can?

[@musicalspace6885]

That's mistake. He changed it after.

[@ebenezermensah2263]

He made a mistake