Решите уравнение sin3x-cos3x=√2sinx пж срочно
Разделим на√2: 1/√2 · sin3x - 1/√2 · cos3x = sinx sin(3x - π/4) = sinx sin(3x - π/4) - sinx = 0 2cos(2x - π/8) · sin(x - π/8) = 0 cos(2x - π/8) = 0 sin(x - π/8) = 0 2x - π/8 = π/2 + πn x - π/8 = πk 2x = 5π/8 + πn x = π/8 + πk x = 5π/16 + πn/2