The curve y = x⁴ - 2x² has local minima at:

Type: MCQ • Marks: 1

A. x = 0

B. x = 1 and x = -1

C. x = ±√2

D. No minima

Explanation

y' = 4x³ - 4x = 4x(x² - 1) = 0 => x = 0, 1, -1. Minima at x = 1, -1.

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UP TGT Mathematics

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