This was fantastic, thanks. The whole series is so amazing I can scarcely comprehend that it's available for free to anyone who wants to learn. Genuinely fantastic.
In the lecture, Prof. Strang used subtracting a row from another but here your use addition, it doesn't make any difference but this difference with lecture kinda confused me! Tnx anyway, just mentioned for other learners.
I like her voice, the way she pronounce the "a" in the word "back" is wierd, I'd heard it before with a friend from Israel. He also pronounce that kind of "a" in such way.
Ah when you solve the whole problem correctly with substitution and don't recognize your mistake until rereading the problem after restarting the video
swapping rows does not correspond to swapping the order of variables, if you multiply it out you will notice it is merely a set of 4 equations and simply shuffling the order of those 4 equations does not change the order of those variables. (col1 is what is multiplied by x, col2 is what is multipied by y, col3 is what is multipled by z and col4 is what is multiplied by u. So exchanging rows does not affect that). If you were to swap the columns however, then you would be changing the order of the variables.
This was fantastic, thanks. The whole series is so amazing I can scarcely comprehend that it's available for free to anyone who wants to learn. Genuinely fantastic.
I was getting lost in lecture, I find adding rows less confusing haha, also this slower but detailed step by step helped a lot! Thank youuu!
fantastic lecture with good problems.
Very precise explaination. explained in every detail.
I like the way she pronounce "two“ :)
I liked she.😂.....and the pronounce "2" also
She is like *sssto*
me "two" :^)
Perfectly clear and nice exercise.
Very nice and clear explanation, thank you
love this course
In the lecture, Prof. Strang used subtracting a row from another but here your use addition, it doesn't make any difference but this difference with lecture kinda confused me! Tnx anyway, just mentioned for other learners.
Thanks, very clearly explained
2:11 walter lewin on my mind
drdrdrdrdrdrdrdrdrdrdr
really nice, interesting exercise
I like her voice, the way she pronounce the "a" in the word "back" is wierd, I'd heard it before with a friend from Israel. He also pronounce that kind of "a" in such way.
Is elimination of matrix means overall matrix system, eg Gauss- jordan Elimination?
Thank you this was very helpful
Thank you.
Ah when you solve the whole problem correctly with substitution and don't recognize your mistake until rereading the problem after restarting the video
Those operations are a bit hard until you get the hang of it. Anyways, I do prefer using Gauss-Jordan to obtain the solutions. Much neater.
Thank you!
Laplace >>>>> Gaussian elimination
Why does this work?
Why not z= 4 and u = 3? We already swapped u and z rows! Any ideas?
swapping rows does not correspond to swapping the order of variables, if you multiply it out you will notice it is merely a set of 4 equations and simply shuffling the order of those 4 equations does not change the order of those variables. (col1 is what is multiplied by x, col2 is what is multipied by y, col3 is what is multipled by z and col4 is what is multiplied by u. So exchanging rows does not affect that).
If you were to swap the columns however, then you would be changing the order of the variables.
But (1,1,3,3) could be a answer too?
Plug these values in the 3rd equation
Cmon cuh why do I never meet people like her in real life
:( i know...
she made me understand better than the professor...
Very concise, well paced , confident and mastery of subject . Superb. I can even marry you for this 😉