Question

Математика.Матрицы. помогите пожалуйста.

Answer 1

$A^2=\left(\begin{array}{cc}0&1\\0&0\end{array}\right)\cdot \left(\begin{array}{cc}0&1\\0&1\end{array}\right)=\left(\begin{array}{cc}0&0\\0&0\end{array}\right)\\\\\\-2A=\left(\begin{array}{cc}0&-2\\0&0\end{array}\right)\\\\\\f(A)=\left(\begin{array}{cc}0&0\\0&0\end{array}\right)+\left(\begin{array}{cc}0&-2\\0&0\end{array}\right)+\left(\begin{array}{cc}1&0\\0&1\end{array}\right)=\left(\begin{array}{cc}1&-2\\0&1\end{array}\right)$