Question: Can I please have help with this problem? 4. Suppose AERnx and bERx], and p(x)=-xTAx -x7b. Show that the gradient of 4 is given by

Can I please have help with this problem?

4. Suppose AERnx and bER"x], and p(x)=-xTAx -x7b. Show that the gradient of 4 is given by Vy(2) = =(AT + A)x - b. 5. Let A=(1/3 1/3 1/3 )T. Think of A as a map from R to R3 via matrix-vector multiplication. Show that the map is one-to-one. Find two linear left-inverses for A. Find a left-inverse for A that is not linear

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