2*sin(x)^2-cos(3*x-3) = 0
2sin^2x-cos(3x-3) = 2sin^2x-cos(3*(x-1))
2sin^2x-cos(3*(x-1)) = 0
x = -9.86929576183666,
x = -2.75923916287624,
x = 0.0310821551768612,
x = 9.80713145148293
2*sin(x)^2-cos(3*x-3) = 0
2sin^2x-cos(3x-3) = 2sin^2x-cos(3*(x-1))
2sin^2x-cos(3*(x-1)) = 0
x = -9.86929576183666,
x = -2.75923916287624,
x = 0.0310821551768612,
x = 9.80713145148293