Chapter 11.3, Problem 1E

To determine

(a)

To fill:

The blanks in the statement “The matrix $I=\left[\begin{array}{cc}1& 0\\ 0& 1\end{array}\right]$ is called an ________ matrix”

To determine

(b)

To fill:

The blanks in the statement “If $A$ is a $2\times 2$ matrix, then $A\times I=$________ and $I\times A=$________”

To determine

(c)

To fill:

The blanks in the statement “If $A$ and $B$ are $2\times 2$ matrices, with $AB=I$, then $B$ is a ________of $A$”