Question: If $\mathrm{A}$ is an invertible square matrix and $\mathrm{k}$ is a non-negative real number then $(\mathrm{KA})^{-1}=$ ?
A. $\mathrm{K} \cdot \mathrm{A}^{-1}$
B. $\frac{1}{k} \cdot A^{-1}$
c. $-\mathrm{k} \cdot \mathrm{A}^{-1}$
D. None of these
Solution:
