Thread: MATLAB - matrice help needed
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Old May 11th, 2008, 07:01 AM
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Originally Posted by Dr Zoidburg View Post
Matrix M = A=\begin{bmatrix}1 && 3 \\-2 && 4 \\\end{bmatrix} represents a linear transformation T: R^{2} -> R^{2}.
Let u = \begin{bmatrix}1 \\-1 \\\end{bmatrix} and v = \begin{bmatrix}-2 \\1 \\\end{bmatrix}
(a) Find T(u) and T(v)
(b) Show that T (u + v) = T (u) + T (v).

I'm pretty hopeless at Matlab. I can work these out by hand: eg T(u) = \begin{bmatrix}-2 \\-6 \\\end{bmatrix} (correct?) but what commands do I use in Matlab to get this?
A*u and A*v

The default product type for Matlab is matrix product so just multiply them.

RonL
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