CUET Mathematics - The function f(x) = -x^3 + 12x^2 - 36x + 21 is A. Increasing on (-∞, 2) B. Decreasing on (-∞, 2) C. Increasing on (2, 6) D. Decreasing on (6, ∞) Choose the correct answer from the options given below: | PYQs + Solutions

CUET Mathematics 2026 30th May Shift 1

Calculus

Medium

common

A and D only

A, B and D only

A, B and C only

B, C and D only

✅ Correct Option: 4

CUET Mathematics 2026 30th May Shift 1 PYQs