On how many maximal connected intervals within [-10, 10] is the derivative of f(x) = 2((-1(1cos(3πx - 1) - 2) + 1)/(-2(1cos(3πx - 1) - 2) + 3))^2 + 1((-1(1cos(3πx - 1) - 2) + 1)/(-2(1cos(3πx - 1) - 2) + 3)) + 4 positive?

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