Let . What is ?
Answer and explanation
Correct answer: D. 67
- Step 1: Differentiate term by term: f'(x) = 9x^2 - 6x + 4.
- Step 2: Substitute x = 3: f'(3) = 67.
Answer
67.
Why not the others: 63 is the value of f itself; 48 is the second derivative; 64 adds the coefficient of x a second time.
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