AP Calculus ABmediummcq1 pt
If f(x) = sin(2x), then f'(x) =
A.cos(2x)
B.2cos(2x)
C.-cos(2x)
D.-2cos(2x)
Explanation
Core Concept
Using the chain rule: d/dx[sin(2x)] = cos(2x) · d/dx(2x) = cos(2x) · 2 = 2cos(2x).
Correct Answer
B2cos(2x)
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