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anonymous
 one year ago
Can someone please help me solve this matrix equation??? Will medal, fan and give a testimony!
anonymous
 one year ago
Can someone please help me solve this matrix equation??? Will medal, fan and give a testimony!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I have to solve for x, y and z but I'm not sure how. I was told to use this equation so I already made A the inverse, but I'm not sure what to do next...\[A^1\times B \]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1where is your A^1 matrix? can you draw it on here? It seems that after we find the inverse we're supposed to use matrix multiplication

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I already made the inverse, this is what it originally looked like before I took the inverse

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1ok so then we need to use matrix multiplication . your A^1 matrix is a 3 x 3 matrix and your B is a 3 x 1 matrix so your A^1 x B should be a 3 x 1 matrix.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm not sure how to do that multiplication...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Is this going to solve x y and z?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1only because we have an m x n matrix and a n x p matrix . They share the same dimension size in the middle so the end result is m x p 3 x 3 A^1 3 x 1 B 3 x 3 3 x 1 3 x 1 should be your end result... but I don't think it's going to lead farther enough to solve the equation because after you do matrix multiplication that new matrix will be to be written down x y z = 4 4x 4y 0 z = 3 0x+y3z = 10 then since you have an augmented matrix of A l B 1 1 1 l 4 4 4 0 l 3 0 1 3 l 10 then we use row operations.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1we need the terms below the main diagonal 0 with row operations that should be easy, but you really need is a reduced row echelon matrix. which means the terms above the diagonal have to go to 0 too... the operations apply to the entire row

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I lost it right after you said 'then since you have an augmented matrix of A l B '

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1do you know row operations for a matrix? Like how to make it echelon form or reduce row echelon form?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh you know I found it on a site where it explains it step by step but thank you SO much for helping me

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1I think you can just take matrix multiplication on the left side of the original matrix and then use row operations... then you will find x y z but the numbers are going to be bigger while you're doing row operations. so when you have a format like 1 0 0 l 3 0 1 0 l 5 0 0 1 l 5 that means x = 3, y =5, and z=5 (just an example) if you plug those values back into the original equation you will know if the entire left matrix = the right matrix a.k.a A =B. I had a hard time with these when I first started but when I practiced and learned the rules, it became easy afterwards.
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