Ask a Question

Let \(f(x)=\frac{x-1}{x+1}\), then f(f(x)) is (a) \(\frac{1}{x}\) (b) \(-\frac{1}{x}\)

0 votes
81 views
in Discuss by (98.9k points)
edited
Let \(f(x)=\frac{x-1}{x+1}\), then f(f(x)) is
(a) \(\frac{1}{x}\)
(b) \(-\frac{1}{x}\)
(c) \(\frac{1}{x+1}\)
(d) \(\frac{1}{x-1}\)

1 Answer

0 votes
by (98.9k points)
selected by
 
Best answer
Answer is (b) \(-\frac{1}{x}\)

Related questions

0 votes
1 answer 106 views
If f(x) = (ax2 + b)3, then the function g such that f(g(x)) = g(f(x)) is given by
asked Jul 10, 2022 in Discuss by Doubtly (98.9k points)

Doubtly is an online community for engineering students, offering:

  • Free viva questions PDFs
  • Previous year question papers (PYQs)
  • Academic doubt solutions
  • Expert-guided solutions

Get the pro version for free by logging in!

Most popular tags

jeemain geography-10th engineering physics semester 5 web computing

5.7k questions

5.1k answers

108 comments

559 users

Doubtly
...