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**exostratics** Hey guys, I'm new to this forum so Hi to everyone. I have a few problems that I"m really having trouble with...I'll start with this one hopefully you guys can help me out.

I want to find an A mxn matrix such that f is linear:

Ax = F(x)

And what I've done:

Suppose:

(a11 a12) * x1 = f1(x)

(a21 a22) * x2 = f2(x)

(This is supposed to be Ax = b) a 2x2 times a 1x2 i just dont kno how to make matrices here)

x1 and x2 can be anything so set x2 = 0

get:

a11*x1 = f1(x1)

a21*x1 = f1(x1)

My professor recommends I now solve for a11, a21 and then the others to construct the A matrix so that f is linear. I have no idea what to do! He says f(x1) can't be anything because it needs to be linear. Please help!

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