On how many maximal connected intervals within [-10, 10] is the derivative of f(x) = 2((2(-1cos(3πx - 3) - 3) + 1)/(2(-1cos(3πx - 3) - 3)))^2 - 3((2(-1cos(3πx - 3) - 3) + 1)/(2(-1cos(3πx - 3) - 3))) - 5 negative?

Present the answer in LaTex format: \boxed{Your answer}
user