Алгебра 10 класс
Нужно очень срочно
номера:
145(а;в)
146(а)
147(а)

145asin(π/3-x/2)≥0sin(x/2-π/3)≤0π+2πk≤x/2-π/3≤2π+2πk4π/3+2πk≤x/2≤7π/3+2πk8π/3+4πk≤x≤14π/3+4πk,k∈z145bcos(x/3+π/4)≥0-π/2+2πk≤x/3+π/4≤π/2+2πk-3π/4≤x/3≤π/4+2πk-9π/4+6ππk≤x≤3π/4+6πk,k∈z147a(sin²x-cos²x)(sin²x+cos²x)<5/8-cos2x<5/8cos2x>-5/8π-arccos5/8+2πk<2x<-arccos5/8+2πkπ/2-1/2*arccos5/8+πk<x<-1/2*arccos5/8+πk,k∈z