InterviewSolution
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InterviewSolution
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`"If A" = [{:(x^(2), y), (5, -4):}] " and "A=A^(-1), " then find " [{:(x^(3), y+x), (1, 2x^(2) + y):}]^(-1)` (a) `(1)/(41)[{:(8, 1), (-1, 5):}]` (b) `(1)/(41)[{:(5, 8), (1, -1):}]` (c) `[{:(5, 1), (-1, 8):}]` (d) `(1)/(41)[{:(5, 1), (-1, 8):}]` |
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Answer» (i) `"Use A"= [{:(a, b), (c, d):}] " and "A=A^(-1)`, then a =d and ad-bc=-1. (ii) Substitute of values of x and y. Find the inverse of that matrix. |
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