For the function f(x) = (2(1cos(2π(3|x|) - 3) + 3) - 2)/(2(1cos(2π(3|x|) - 3) + 3) - 3), find the number of maximal connected intervals in [-10, 10] where f'(x) < 0.

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