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JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

If

f(x)=\log _a x

and

F(x)=a^x

, then

F[f(x)]

is

View answer and explanation

Correct option: A

f[F(x)]

Option A (

f[F(x)]

) is correct because

F[f(x)] = a^{\log_a x} = x

and

f[F(x)] = \log_a a^x = x

, so

F[f(x)] = f[F(x)]

.

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