Find the extreme values of `3sin^(2)x+5cos^(2)x`.

Find the extreme values of sin 2x -cos 2x over R.

Find the extreme values of cos 2x+cos^2x

Find the extreme values of 11 cos^(2) x+ 15 sin x cos x- 9 sin^(2) x .

Find the extreme values of cos^(2) theta - sin^(2) theta

Find the maximum value of 4sin^(2)x+3cos^(2)x+sin((x)/(2))+cos((x)/(2))

The extreme values of cos^(6) x + sin^(6) x are

Find the extreme values of y = cos x(1+sin x), x in [0,2pi]

The extreme values of sin^(2)((pi)/(3)+x)+sin^(2)((pi)/(3)-x) is

Find the extreme points of the following functions. Specify if the extremum is a maximum or minimum. Find the extreme values. y = sin x cos x,x in [pi/8, pi/2]