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For f(x) = 3x^2, a student pulls the 3 out and differentiates the rest. The derivative is:
A6x
B9x
C3x
D2x
Answer & Solution
Correct answer: A. 6x
1. The constant stays multiplied through.
2. The derivative of x^2 is 2x.
3. The derivative is 6x.
_Source: OpenStax Calculus Volume 1, Chapter 3, Derivatives._
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