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

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