Teaching DSSSB TGT Mock Test 2025 Mathematics Relations and Functions

माना कि f : [0, 1) → [0, ∞) एक ऐसा फलन है जिसके लिए f (x) = \(\left|\frac{x}{x-1}\right|\) है, तो f -1 (x) =

1
\(\frac{x}{1+x}\)
2
\(\frac{x}{1-x}\)
3
\(\frac{2 x}{1+x}\)
4
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