Calculus
posted by Anonymous .
If f(x)=sqrt(14x)
a)find f' (x)
b) find f'(4)

f(x) = (14x)^(1/2)
f ' (x) = (1/2)(14x)^(1/2) (14)
= 7/√(14x)
f ' (4) = 7/√(56) or 7/(2√14)
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