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If `A = [{:(x^(2), y^(2)), ("log"_(1024)a, -9):}],a =16^(25) " and if " A = A^(-1), " then "[{:(x^(2), y), (1, x^(2) + y):}]^(-1)` = _____.A. `(1)/(65)[{:(7, 2),(-1, 9):}]`B. `(1)/(65)[{:(7, -2),(1, 9):}]`C. `(1)/(65)[{:(7, 2),(1, 9):}]`D. `(1)/(65)[{:(9, 2),(-1, 7):}]` |
Answer» Correct Answer - A (i) Put `a = 16^(25) " in log"_(1024)` a and simplify. (ii) Then, find x and y values using the relation `A = A^(-1)`. (iii) Find the inverse of the given matrix. |
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