If f : \R\to\R is defined as f(x) = {3^{x} + 3^{-x}}/2, \forallx\in\R and it satisfies f(x+y)+f(x-y) = a f(x)f(y), then a =

TS EAMCET 4-Aug-2021 Shift 1 Question Paper

Section: Mathematics

Question : 2 of 160

Marks: +1, -0

If f : R→R is defined as f(x) =

3x+3−x

, ∀x∈R and it satisfies f(x+y)+f(x−y) = a f(x)f(y), then a =

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