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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 :) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2Qx3JqG537I.html
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.
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.
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
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 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
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.
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.
I've seen lot's of videos from this channel but never thought about subscribing till now. I thought it was about time since this guy does such a good job explaining things. Thanks.
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 :).
Majority of university students are struggling to solve these. This RU-vid channel is very very helpful for uni students and also who needs much more support for Mathematics subject as well. This Tutor feels like a home visiting teacher for me, Everything's perfectly taught ❤.. Thank you so much. ❤
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
I actually love the errors in transposing midway--they had me on the edge of my seat (Will he notice the error? ... Yes!) This was EXCELLENT. Now to tightrope walk this without a net...
I want you to know that you are a great teacher and are better than my math teachers. I pray for your prosperity everynight because nyou have blessed me so I want God through Lord Jesus Christ to bless you. I hope you and your family have a blessed upcoming new year and I hope to see you in heaven
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 ?
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.
there are 2 type of people. 1st type here are talking about DEGREES and stuff and here me of 2nd type sitting in 2023 and trying to crack 12th and JEE 😊😊. But still it helps although these types of questions are very less in JEE but it helps a lot with boards !!! THANK YOU !!! VVVVVVV MUCH !!!
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
I was in class today attending my lecture 😭😭😭yoo they make things difficult 😭😭😭I just understood what's going on here🎉🎉❤❤thank you man🎉🎉❤❤❤❤❤❤we love you ❤️❤️
Thank you so much for this video! My teacher tryed to explain it in class, and he made it sound so much more complicated than it really was. Your video made it very easy to understand!
Thank you so much, you are my favourite math and science RU-vid tutor 😊😎. Thanks to your videos I was able to get an A* in math GCSE Extended and a grade 2 in physical science Higher level in grade 12😎😁, keep up the good work. 🤓
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.
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.
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
I usually use A^-1=1/detA*C^T. Where the inverse is given by 1 divided by the determinant * the matrix of every minor C transponated.But this method is ineffective for matrix bigger than 3x3
but WHY? that's the most important part. i came from watching 3B1B where he explains everything so well, but everyone else is just saying "do this then that"...
