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प्रश्न
if A' = `[(-2,3),(1,2)] and B = [(-1,0),(1,2)]` then find (A + 2B)'
उत्तर
Given, A' = `[(-2,3),(1,2)]` and` "B" = [(-1,0),(1,2)]`
so, A = `[(-2,1),(3,2)]` [Because(A)' = A]
Now, (A + 2B) = `[(-2,1),(3,2)] + 2 [(-1,0),(1,2)]`
`= [(-2,1),(3,2)] + [(-2,0),(2,4)]`
`= [(-2 - 2, 1 + 0),(3 + 2, 2 + 4)]`
`= [(-4, 1),(5,6)]`
(A + 2B)' = `[(-4 , 5), (1,6)]`
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