MCQ
જો $f(x) = \frac{x}{{1 + x}}$, તો ${f^{ - 1}}(x) =$
- A$\frac{{(1 + x)}}{x}$
- B$\frac{1}{{(1 + x)}}$
- C$\frac{{(1 + x)}}{{(1 - x)}}$
- ✓$\frac{x}{{(1 - x)}}$
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