Let f and g be differential functions on R such that fog is the identity function. If for…
Mathematics · JEE Main · NTA Exams — Limit, Continuity and Differentiability
Let f and g be differential functions on R such that fog is the identity function. If for some a,b ∈ R, g'(a) = 5 and g(a) = b, then f'(b) is equal to:
- \(\frac{1}{5}\)
- \(\frac{2}{5}\)
- 1
- 5
Answer
(A) 1 5
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