CAT Quant Practice Problems

Question: If \(y = f\left( x \right){\rm{ }}and{\rm{ }}f\left( x \right) = \left( {1--x} \right)/\left( {1 + {\rm{ }}x} \right),\) which of the following is true?
  1. \(f\left( {2x} \right) = {\rm{ }}f\left( x \right)--1\)
  2. \(x = {\rm{ }}f\left( {2y} \right)--1\)
  3. \(f\left( {1/x} \right) = f\left( x \right)\)
  4. \(x{\rm{ }} = {\rm{ }}f\left( y \right)\)

Correct Option:4

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CAT Quant Practice Problems
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