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JEE Mains · Maths · STD 12 - 1. relation and function

यदि फलन \(f : R -\{1 .-1\} \rightarrow A , f (x)=\frac{x^{2}}{1-x^{2}}\), द्वारा परिभाषित है तथा आच्छादी (surjective) है, तो \(A\) बराबर है :

  1. A \(R\, - \,[ - 1,0)\)
  2. B \(R\, - \,( - 1,0)\)
  3. C \(R\, - \,\{  - 1\} \)
  4. D \([0,\infty )\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(R\, - \,[ - 1,0)\)

Step-by-step Solution

Detailed explanation

\(y\, = \frac{{{x^2}}}{{1 - {x^2}}}\) Range of \(y : R - [ - 1,0)\) for surjective function, \(A\) must be same as above range.
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