JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

Let

f(x)=\frac{1-x}{1+x}

. Then

f o f(\cos x)

is equal to

View answer and explanation

Correct option: B

\cos x

Option B (cos x) is correct because applying the function f twice results in the original input, cos x.

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