The minimum value of e^x + e^(-x) is:

Type: MCQ • Marks: 1

A. 1

B. 0

C. e

D. 2

Explanation

By AM-GM inequality or derivative test, eˣ + e⁻ˣ ≥ 2√(eˣ * e⁻ˣ) = 2.

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UP TGT Mathematics

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