The function f is one-to-one. Find its inverse.f(x) = x2 + 1, x ? 0

A. f-1(x) =  - 1, x ? 0
B. f-1(x) = , x ? 1
C. f-1(x) = , x ? -1
D. f-1(x) =  - 1, x < 0

Answer: B

Mathematics

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