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Functions question

2025 · 24 Jan · Shift 2 · Q45

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PYQ Library
JEE Main
Mathematics
Functions
2025 · 24 Jan · Shift 2 · Q45

Functions question

2025 · 24 Jan · Shift 2 · Q45

JEE MainMathematicsFunctionsMCQ+4 / −1

The function

f:(-\infty, \infty) \rightarrow(-\infty, 1)

, defined by

f(x)=\frac{2^x-2^{-x}}{2^x+2^{-x}}

is :

A
One-one but not onto
B
Onto but not one-one
C
Both one-one and onto
D
Neither one-one nor onto

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