Mathematics, 04.08.2021 21:50, riley01weaver1
NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW. Ch. 15 part 1a How can a matrix be used to solve a system of equations. Demonstrate by solving the following system. Show your work.
Answers: 2
![\left[\begin{array}{ccc}1&-3\\3&-4\end{array}\right]](/tpl/images/1404/4343/d3a66.png)
![\left[\begin{array}{ccc}x\\y\end{array}\right]](/tpl/images/1404/4343/c0d68.png)
= ![\left[\begin{array}{ccc}2\\0\\\end{array}\right]](/tpl/images/1404/4343/20ef2.png)
![\left[\begin{array}{ccc}w&x\\y&z\end{array}\right]^{-1} = \frac{1}{wz-xy}\left[\begin{array}{ccc}z&-x\\-y&w\end{array}\right]](/tpl/images/1404/4343/8555a.png)
![A^{-1} = \frac{1}{(1*-4)-(-3*3)}\left[\begin{array}{ccc}-4&3\\-3&1\end{array}\right]](/tpl/images/1404/4343/3ef70.png)
![A^{-1} = \frac{1}{5}\left[\begin{array}{ccc}-4&3\\-3&1\end{array}\right]](/tpl/images/1404/4343/b3ff1.png)
![X = \frac{1}{5}\left[\begin{array}{ccc}-4&3\\-3&1\end{array}\right] * \left[\begin{array}{ccc}2\\0\end{array}\right]](/tpl/images/1404/4343/cf96c.png)
![X = \frac{1}{5}\left[\begin{array}{ccc}-8\\-6\end{array}\right]](/tpl/images/1404/4343/e1ff0.png)
![\left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}\frac{-8}{5}\\\frac{-6}{5}\end{array}\right]](/tpl/images/1404/4343/45e7b.png)
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NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW. Ch. 15 part 1a
How can a matrix be used to solve a...
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