The function f is one-to-one. Find its inverse.f(x) = x2 + 4, x ? 0
A. f-1(x) = 
- 4, x ? 0
B. f-1(x) = 
- 4, x < 0
C. f-1(x) = 
, x ? 4
D. f-1(x) = 
, x ? -4
Answer: C
Mathematics
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