Find the range of f(x)=cos2x+sinx+1f(x) = \cos^2 x + \sin x + 1f(x)=cos2x+sinx+1.
[0,2][0, 2][0,2]
[0.75,2.25][0.75, 2.25][0.75,2.25]
[1,2][1, 2][1,2]
[0.25,2.25][0.25, 2.25][0.25,2.25]