Let . Then…

MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives

Problem

Let

f(x)=1+2x^2+2^2x^4+\dots+2^{10}x^{20}

. Then

f(x)

has (a) More than one minimum (b) Exactly one minimum (c) At least one maximum (d) None of these