Question

Решите пожалуйста
2cos(4x+П/3)=-1

Answer 1

2cos(4x+ п/3)=-1
cos(4x+п/3) = -1/2
4x+ п/3=(2п)/3+2п k и -(2п)/3+2пk
4x= (2п)/3-п/3+2пk и -(2п)/3-п/3+2п k
4x=п/3+2пk и -п+2пk
x=п/12+1/2пk и -п/4+1/2пk