Question

The function 1x) is decreasing in the interval 100.0 (d) none of these

JEE/Engineering Exams

Maths

Solution

4.0 (1 ratings)

( f^{prime prime} frac{2 cos x cdot cos x-sin x}{x^{2}} ) ( x cos x-sin x>0 ) ( x ) fann ( x< ) fan ( x ) (fordeceresery ( x-tan x<0 ) ( sin x(-C, x) )