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greeneyes<3
 2 years ago
Best ResponseYou've already chosen the best response.0[5, 13_0, 5]X=[3, 1_4, 0] Sorry idk how to use the other equation sign thing :P

greeneyes<3
 2 years ago
Best ResponseYou've already chosen the best response.0My teacher that when you multiply you have to do it from the left or you will get a different answer... My answer was X=[1.48, .8_.2, 0]

greeneyes<3
 2 years ago
Best ResponseYou've already chosen the best response.0So it would be multipled [.2, 0.52_0, 0.2] [3, 4,_1,0]

greeneyes<3
 2 years ago
Best ResponseYou've already chosen the best response.0is it alright if i multipled from the left instead of the right? that what my book and my teacher did, so i'm confused. idk which way is the right way... :(

joemath314159
 2 years ago
Best ResponseYou've already chosen the best response.2You are correct. You have to multiply on the left to get the right answer. Matrix multiplication is not commutative, so the order of multiplication is really important.

asnaseer
 2 years ago
Best ResponseYou've already chosen the best response.1yes greeneyes  you (and joemath) are right. you MUST multiply on the left or you will get the wrong answer. I believe across has the wrong answer here. e.g if: \[AX=B\]then:\[A^{1}AX=A^{1}B\]therefore:\[X=A^{1}B\]

greeneyes<3
 2 years ago
Best ResponseYou've already chosen the best response.0Thank you both so much! :)
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