Matrix Multiplication TransformationA transformation(or function or mapping) &T& from $\mathbb{R}^n$ to $\mathbb{R}^m$ Matrix Transformation Ex.$$ \begin{bmatrix}1&0&0 \\0&1&0 \\0&0&1 \end{bmatrix}=A$$$$ \begin{bmatrix}1&0&0 \\0&1&0 \\0&0&1 \end{bmatrix}\begin{bmatrix}x_1\\x_2\\x_3\end{bmatrix}=\begin{bmatrix}x_1\\x_2\\0\end{bmatrix}$$ Ex.$$\begin{bmatrix}1&3 \\0&1 \end{bmatrix}$$$$\begin{bmatri..
