KEAM 2019 Math Paper

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Question : 95 of 121

Marks: +1, -0

If f(x)=‌

3x+2

5x−3

, then

f−1(x)=f(x)
f−1(x)=−f(x)
(f∘f)(x)=−x
f−1(x)=−‌
f(x)
19
(f∘f)(x)=‌
1
x

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