Let f(x) = 2x if x<3, and x² - 1 if x≥3. Evaluate f(4).
Direct Answer: Piecewise Evaluation is defined by: 15. Because 4 ≥ 3, use the second branch: 4² - 1 = 16 - 1 = 15.
Detailed Step-by-Step Explanation:
Because 4 ≥ 3, use the second branch: 4² - 1 = 16 - 1 = 15.