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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Functions

NDA 2014 · Mathematics · Functions

Consider the function f(x)=(x-1)/(x+1) . What is f(2 x) equal to?

Consider the function f(x)=x−1x+1f(x)=\frac{x-1}{x+1}. What is f(2x)f(2 x) equal to?

Options

  1. Af(x)+1f(x)+3\frac{f(x)+1}{f(x)+3}
  2. Bf(x)+13f(x)+1\frac{f(x)+1}{3 f(x)+1}
  3. C3f(x)+1f(x)+3\frac{3 f(x)+1}{f(x)+3}
  4. Df(x)+33f(x)+1\frac{f(x)+3}{3 f(x)+1}

Correct answer

C. 3f(x)+1f(x)+3\frac{3 f(x)+1}{f(x)+3}

Step-by-step solution

The correct answer is option(C)
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