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Question
If A = `|(1,3),(3,2)|` and B = `|(-2,3),(-4,1)|` find AB
Solution
A = `|(1,3),(3,2)|_(2 xx 2)` B = `|(-2,3),(-4,1)|_(2 xx 2)`
AB = `|(1,3),(3,2)| |(-2,3),(-4,1)|`
`= |(-2-12 , 3 + 3),(-6-8 , 9 + 2)| = |(-14 , 6),(-14 , 11)|_(2 xx 2)`
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