Matrix Power Calculator

The calculator will find the given matrix raised to the given integer (positive or negative) power (if possible), with steps shown. Thus, it can square and cube the matrix. It handles matrices of any size up to 7x7 (2x2, 3x3, 4x4, etc.).

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Find $\left[\begin{array}{ccc}1 & 3 & 4\\-1 & -8 & 5\\0 & 6 & -7\end{array}\right]^{2}$.

Solution

To raise a matrix to the power $n$, multiply the matrix by itself $n - 1$ times.

$\left[\begin{array}{ccc}1 & 3 & 4\\-1 & -8 & 5\\0 & 6 & -7\end{array}\right]^{2} = \left[\begin{array}{ccc}1 & 3 & 4\\-1 & -8 & 5\\0 & 6 & -7\end{array}\right]\cdot \left[\begin{array}{ccc}1 & 3 & 4\\-1 & -8 & 5\\0 & 6 & -7\end{array}\right] = \left[\begin{array}{ccc}-2 & 3 & -9\\7 & 91 & -79\\-6 & -90 & 79\end{array}\right]$ (for steps, see matrix multiplication calculator).

$\left[\begin{array}{ccc}1 & 3 & 4\\-1 & -8 & 5\\0 & 6 & -7\end{array}\right]^{2} = \left[\begin{array}{ccc}-2 & 3 & -9\\7 & 91 & -79\\-6 & -90 & 79\end{array}\right]$A