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10 January, 10:12

Assume that the function f is a one-to-one function, (a) f (8) = 9, find f ^ - 1 (9)

also if f ^ - 1 (-7) = - 3, find f (-3)

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  1. 10 January, 12:05
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    (a) since we are given that f (8) = 9, the inverse of 9 is simply 8. Therefore, f^-1 (9) = 8.

    (b) Again, f is the inverse of f^-1, therefore, you simply switch numbers, and you get that f (-3) = - 7.
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