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Problem 28 Easy Difficulty

In Exercises 25-34, use the matrix capabilities of a graphing utility to find the inverse of the matrix (if it exists).

$\left[ \begin{array}{r} 3 & 2 & 2 \\ 2 & 2 & 2 \\ -4 & 4 & 3 \end{array} \right]$

Answer

$A^{-1}=\begin{array}{ccc}{1} & {-1} & {0} \\ {7} & {-\frac{17}{2}} & {1} \\ {-8} & {10} & {-1}\end{array}$

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Video Transcript

I'm going to be using the free open source computer. Ouch! Persistent Morsi s called Maxima for solving these problems. Where there s us to do it with the computer for problem 28. You have my matrix 3 to 2. Who and minus for for three. And it looks good that we invert it and there is our answer.