Let f : R → R be such that for all x \in R (2^{1+x }+ 2^{1-x}), f(x) and (3^x + 3^{-x}) are in A.P., then the minimum value of f(x) is [8 Jan 2020 Shift 1]

Sequences and Series Part 1

Section: Mathematics

Question : 22 of 100

Marks: +1, -0

Let f : R → R be such that for all x∈R(21+x+21−x),f(x) and (3x+3−x) are in A.P., then the minimum value of f(x) is

[8 Jan 2020 Shift 1]

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