If y = a x + bx^2 + x has extreme values at x = 1 and x = 2, then Option 1: a=2/3, b=-1/6 Option 2: a=-2/3, b=1/6 Option 3: a=-2/3, b=-1/6 Option 4: a=2/3, b=1/6

The answer is 'a=-2/3, b=-1/6'. View full solution:

CUET Mathematics - If y = a x + bx^2 + x has extreme values at x = 1 and x = 2, then | PYQs + Solutions

CUET Mathematics 2026 18th May Shift 1

Calculus

Easy

common

$a=\frac{2}{3}, b=-\frac{1}{6}$

$a=-\frac{2}{3}, b=\frac{1}{6}$

$a=-\frac{2}{3}, b=-\frac{1}{6}$

$a=\frac{2}{3}, b=\frac{1}{6}$

✅ Correct Option: 3