engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Relations and Functions Inverse of a Function
If f(x) = \(\rm \displaystyle {1-x\over1+x}\), then f-1(x) = ?
1
\(\rm\displaystyle{1-x\over1+x}\)
2
\(\rm\displaystyle{1+x\over1-x}\)
3
\(\rm\displaystyle{1\over1+x^2}\)
4
x