67 À :: `+`(`/`(`*`(3), `*`(`^`(cos(`+`(x, `-`(`*`(`+`(`*`(17, `*`(Pi))), `/`(1, 2))))), 2))), `/`(`*`(4), `*`(sin, `*`(x))), `-`(4)) = 0                      Á :: [−7π/2;−2π] 

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