Question: - 2 1 3 2 - u a ) find AT ? b what is the ( 4 1 2 ) entry of (AAT )

- 2 1 3 2 - u a ) find AT ? b what is the ( 4 1 2 ) entry of (AAT ) ? C ) Use part ( a ) to find the solution set to each of the following system X - 2y = 1 x 1 - 2 x 2 = - 2 y - 22 = 2 X 2 - 2 x 3 20 - 3x +by + 2= - 1 - 3 x 1 + 6 x 2 + x 3 = 1 2 x - hy + w = O 2 x1 - Wx 2 + X q = 3

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