Find y'' if y = 2x sin x. O O O A. y'' = 4 cos x - 2x sin x B. y'' = - 2x sin x OC. y'= - 4 cos x + 2x sin x OD. y'=2 cos x - 4x sin x

2, y = 2 + cos x

(1+siny)[1+sin(-y)]=cos2y

(a) 3 cos (3x + 2) = 2 over the interval (-π, π]. (b) 2 sin(2x - 3) = 4 over the interval (0, 2. π]. (c) 2 cos(2x - 3) = 0 over the interval (-, 3. π]. Pay attention to the interval. (d) tan(2x - 3) = 2 over the interval (-3, 3-π].