For the function f(x) = -2((-1(3cos(1πx - 2) + 2) + 1)/(-1(3cos(1πx - 2) + 2) - 2))^2 - 1((-1(3cos(1πx - 2) + 2) + 1)/(-1(3cos(1πx - 2) + 2) - 2)) + 5, find the number of maximal connected intervals in [-10, 10] where f'(x) < 0.

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