If f(x) = x³ - 2x² + x - 1, what is f'(2)?
Question 1
Q1. If f(x) = x³ - 2x² + x - 1, what is f'(2)?
Answer: 5
Explanation: Differentiating f(x) gives f'(x) = 3x² - 4x + 1, then f'(2) = 3(2)² - 4(2) + 1 = 5.