Let f (x) = sin x, g (x) = 2x and h (x) = cos x. If φ (x) = [go (f h)] (x), then φ “ ( 4…

Mathematics · JEE Advanced · NTA ExamsLimit, Continuity and Differentiability

Let f (x) = sin x, g (x) = 2x and h (x) = cos x.
If φ (x) = [go (f h)] (x), then φ “\(\left(\frac{\pi}{4}\right)\) is equal to
  1. 4
  2. 0
  3. –4
  4. None of these

Answer

(C) –4

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