Name: Line_3
/*
Author: Schwartz ...
*/
F(): cos(x) + cos(y) + cos(z)
[x]: -4 , 4
[y]: -4 , 4
[z]: -4 , 4
Cnd: (x^2 + y^2 + z^2 -9)*(x^2 + y^2 + z^2 -12) *(x^2 + y^2 + z^2 -15)> 0
;