Identity matrix | Matrices | Precalculus | Khan Academy

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Precalculus on Khan Academy: You may think that precalculus is simply the course you take before calculus. You would be right, of course, but that definition doesn't mean anything unless you have some knowledge of what calculus is. Let's keep it simple, shall we? Calculus is a conceptual framework which provides systematic techniques for solving problems. These problems are appropriately applicable to analytic geometry and algebra. Therefore....precalculus gives you the background for the mathematical concepts, problems, issues and techniques that appear in calculus, including trigonometry, functions, complex numbers, vectors, matrices, and others. There you have it ladies and gentlemen....an introduction to precalculus!

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[yashnikam]

IA=AI=A the order doesn't matter in case of identity matrices

[salahali]

thank you. you are helping me to learn a lot in mathematics

[jerfersonmatos]

In identity matrices the order don't matter, I've tried on my notebook

[winstonloke]

this is better than paid udemy courses.

[abdurehmanpasha]

loved it just need for my igcse exam tnx sooo much XD

[aashikajain]

Sir ji in place of A if there is a no 3, if we multiply it by identity matrices can it equal to 3

[Kblmquist]

For some reason it was very hard for my brain to do it I x A, but I think I finally found the answer and it's very interesting.  (assuming I did everything right)  thanks.  

[paulhetherington]

No matrix -- can accept any - odd num - lttr!

[piusdarko]

Is it possible to have an identity matrix which is a (1*1) matrix?

[___]

do you really have to repeat everything 6 times omg, cant even watch this bc of that

[zubairahmedbarbhuiya]

Shob bala aso ni
kawa dawa korte paro ni