Решить уравнение sin(2x-p/2)=-1/2
Sinx(2x-π/2)=-1/2 2x-π/2=(-1)^(k+1) π/4+πk, k∈Z 2x=(-1)^(k+1) π/4+πk+π/2, k∈Z 2x=(-1)^(k+1) 3π/4+πk, k∈Z x=(-1)^(k+1) 3π/8+πk/2, k∈Z ответ: x=(-1)^(k+1) 3π/8+πk/2, k∈Z