Mathematics for IGCSE & O level - Functions (Section 3 - No. 45) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 3 - No. 45)

Given f(x) = x + 5, and the inverse of the function f⁻¹(x) = x-5, find f⁻¹(10).

5

15

-5

2

Explanation

Substitute x=10 into the function.

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