VCE Maths Methods Practice Questions - VCE Mathematical Methods (Units 3 & 4) Exam

If f(x) = x^2 + 1 with domain restricted to x >= 0, what is the rule for the inverse function f^(-1)?

sqrt(x - 1) sqrt(x) - 1 (x - 1)^2 sqrt(x + 1)

Correct Answer:

sqrt(x - 1)

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