Question

Let $y=2sinx+cos2x(0\le x\le 2\pi )$. All the points at which y is extremum are arranged in a row such that the points of maximum and minimum come alternately the number of such arrangements is :

• A. 16
• B. 8
• C. 12
• D. 24

Answer 1

The correct option is B

8

values of x at which as maximum and minimum are: $\frac{\pi }{6}$,$\frac{5\pi }{6}$