Simplification Before Differentiation
For which of the following functions is it most efficient to simplify the expression before differentiation?
A
f(x) = (x² + 1)/(x - 3)
B
f(x) = e^x / (1 + e^x)
C
f(x) = ln(x) · √(x+1)
D
f(x) = sin²(3x) · cos²(3x)
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