If g(x) = 1-x and h(x) = (x)/(x-1), then (g(h(x)))/(h(g(x))) is:
Topic-wise GATE CS PYQs with verified steps
GATE CSE 2015 Set 1 · Q5
Time
Select one answerSingle correct
Solution
Official answer: A) (h(x))/(g(x))
CalculusGiven:
First, find $g(h(x))$:
Next, find $h(g(x))$:
Now, compute the ratio:
Let us evaluate the options:
Option (A):
This matches our computed ratio. Therefore, the correct option is (A).
Try the question first, then check your work.
Examiner trap
Evaluate the composite functions and step by step and compare their ratio with the given choices.
This Calculus previous year question is Q5 of the GATE CSE 2015 Set 1 paper. Find more GATE CSE PYQs on Calculus in Engineering Mathematics, or browse all GATE CSE PYQs.
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Calculus has 40 GATE CSE PYQs across 25 papers from 2011 to 2026. 14 of them are 1-mark MCQs like this one, and GATE CSE 2015 Set 1 has 4.
How GATE tests CalculusIndependent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.