Question

Срочноооооооооооооо!!!!!!

Answer 1

$2sin(\pi +3x)\leq \sqrt3\\\\sin(\pi +3x)\leq \frac{\sqrt3}{2}\\\\-\frac{4\pi }{3}+2\pi n\leq \pi +3x\leq \frac{\pi }{3}+2\pi n\; ,\; n\in Z\\\\-\frac{\pi }{3}+2\pi n\leq 3x\leq -\frac{2\pi }{3}+2\pi n\; ,\; n\in Z\\\\-\frac{\pi }{9}+\frac{2\pi n}{3}\leq x\leq -\frac{2\pi }{9}+\frac{2\pi n}{3}\; ,\; n\in Z$