Question

Решите систему неравенств

Answer 1

$left { {{sinx leq 0} atop {sinx textgreater -frac{sqrt3}{2}}} right. ; left { {{-pi +2pi n leq x leq 2pi n; ,; nin Z} atop {-frac{pi}{3}+2pi k textless x textless frac{4pi}{3}+2pi k; ,; kin Z}} right. \\xin (-frac{pi}{3}+2pi n;2pi n]cup [, pi +2pi n;frac{4pi}{3}+2pi n)$