Please enter the following details
Free Daily Targets & Mocks
Study Material & Formulas PDFs
1 on 1 Mentorship
Question 25
If $$y = f(x)$$ and $$f(x) = \frac{(1-x)}{(1 + x)}$$, which of the following is true?
Solution
Among all options only D satisfies the given equations as follows:
$$f(y) = \frac{1-y}{1+y}$$
and for x:
$$y + xy = 1-x$$
$$x(1+y) = 1-y$$
$$x= \frac{1-y}{1+y}$$
Hence $$x=f(y)$$
Video Solution
Create a FREE account and get:
- All Quant CAT complete Formulas and shortcuts PDF
- 38+ CAT previous year papers with video solutions PDF
- 5000+ Topic-wise Previous year CAT Solved Questions for Free
CAT Quant Questions | CAT Quantitative Ability
CAT Number Systems QuestionsCAT Algebra QuestionsCAT Probability, Combinatorics QuestionsCAT Simple Interest Compound Interest QuestionsCAT Linear Equations Questions
CAT DILR Questions | LRDI Questions For CAT
CAT Maxima-Minima QuestionsCAT Truth Lie Concept QuestionsCAT Table with Missing values QuestionsCAT Miscellaneous LR QuestionsCAT Quant Based LR Questions
