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CGP EDU Academic Team
Published on: August 12, 2026
Iff(x) = 2x – sinx & g(x) = x 1/3 then
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b,c, d)
f ′ (x) = 2 – cos x > 0 ∀ x ∈ R so one-one,
g ′ (x) = 
x –2/3 > 0 ⇒ one-one
since both ‘g’ and ‘f ’ are one-one hence gof is also one-one, gof(x) = g[f(x)] = (2x – sin x) 1/3 ∈ R
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