JEE Main 20248 Apr, Morning shiftMathematicsMediumLimit, Continuity and Differentiability420× since 2002Let f(x)=4cos3x+33cos2x−10f(x)=4 \cos ^3 x+3 \sqrt{3} \cos ^2 x-10f(x)=4cos3x+33cos2x−10. The number of points of local maxima of fff in interval (0,2π)(0,2 \pi)(0,2π) isAOption A. 1BOption B. 3COption C. 4DOption D. 2CheckSkip · show solution