48 À :: `+`(`*`(7, `*`(`^`(sin, 2), `*`(x))), `*`(8, `*`(cos, `*`(x))), `-`(8)) = 0                                          Á :: [−π/2;π/2] 

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À :: `+`(`*`(2, `*`(Pi, `*`(n)))), `+`(`&+-`(`+`(`*`(`/`(1, 7), `*`(arccos)))), `*`(2, `*`(Pi, `*`(m)))); 1; m, `in`(n, Z) Á :: 0; 1; `&+-`(`+`(`*`(`/`(1, 7), `*`(arccos))))