Trigonometric EquationEasy
Question
If f(x) = (2x - π)3 + 2x - cosx, then 
(f-1 (x)) at x = π is equal to -
(f-1 (x)) at x = π is equal to -Options
A.1/2
B.1/3
C.1/4
D.1/5
Solution
g′(y) = 
⇒ g′(π) 
(where g is inverse of f)
⇒ g′(π) (where g is inverse of f)
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