If $f(x)=\cos (\log x)$, then $f(x) f(y)-\{(1 / 2)[f(x / y)+f(x y)]\}$ is

JEE MATHEMATICS MCQ: FUNCTIONS

1 Medium

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Application +4 | -1

f(x)=\cos (\log x)

, then

f(x) f(y)-\{(1 / 2)[f(x / y)+f(x y)]\}

View answer and explanation

Correct option: D

None of these

Option D (None of these) is correct because the expression simplifies to 0, which is not among the given options.

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