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प्रश्न
If A = `[[3,9,0] ,[1,8,-2], [7,5,4]]` and B =`[[4,0,2],[7,1,4],[2,2,6]]` , then find the matrix `B'A'` .
उत्तर
B' = `[[4,7,2],[0,1,2],[2,4,6]]` & A' = `[[3,1,7],[9,8,5],[0,-2,4]]`
`therefore` B'A' = `[[4,7,2],[0,1,2],[2,4,6]][[3,1,7],[9,8,5],[0,-2,4]]`
= `[[12+63, 4+56-4, 28+35+8],[9,8-4,5+8],[6+36,2+32-12,14+20+24]]`
= `[[75,56,71],[9,4,13],[42,22,58]]`
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