Find the derivative.f(x) = 20x1/2 - 
x20
A. f '(x) = 10x-1/2 - 10x10
B. f '(x) = 10x1/2 - 10x10
C. f '(x) = 10x-1/2 - 10x19
D. f '(x) = 10x1/2 - 10x19
Answer: C
Mathematics
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