64 À :: `+`(`/`(1, `*`(`^`(sin, 2), `*`(x))), `-`(`/`(`*`(3), `*`(sin, `*`(x)))), 2) = 0                                         Á :: [-5π/2;-π] 

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À :: `+`(`*`(`/`(1, 2), `*`(Pi)), `*`(2, `*`(Pi, `*`(k)))); 1; `+`(`*`(`/`(1, 6), `*`(Pi)), `*`(2, `*`(Pi, `*`(m)))); 1; `+`(`*`(`+`(`*`(5, `*`(Pi))), `/`(1, 6)), `*`(2, `*`(Pi, `*`(n)))) Á ::