Mathematics, 29.03.2020 04:48 Totototono
A and B are two 2x2 matrices that A =1 2 and B= 5 -2. Find AB. 2 5 -2 1
Answers: 3
![AB=\left[\begin{array}{cc}1&0\\0&1\\\end{array}\right]](/tpl/images/0569/4140/98c30.png)
![A =\left[\begin{array}{cc}1&2\\2&5\\\end{array}\right] \\\\\\B =\left[\begin{array}{cc}5&-2\\-2&1\\\end{array}\right]](/tpl/images/0569/4140/78ebf.png)
![AB=\left[\begin{array}{cc}1&2\\2&5\\\end{array}\right]\left[\begin{array}{cc}5&-2\\-2&1\\\end{array}\right] \\\\\\AB=\left[\begin{array}{cc}1\times 5+2\times -2&1\times -2+2\times 1\\2\times 5+5\times -2&2\times -2+5\times 1\\\end{array}\right]\\\\\\AB=\left[\begin{array}{cc}1&0\\0&1\\\end{array}\right]](/tpl/images/0569/4140/530dd.png)
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A and B are two 2x2 matrices that A =1 2 and B= 5 -2. Find AB. 2 5 -2 1...
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