Question

решите уравнение
sin4xcosxtg2x=0

Answer 1

$begin{array}{l} sin (4x)times cos (x)times tan (2x)=0.\ 1.sin (4x)=0\ x=frac{pi k}{4} ;kin mathbb{Z} .\ 2.cos (x)=0\ x=frac{pi }{2} +pi k;kin mathbb{Z} .\ xneq frac{pi }{4} +frac{pi k}{2} ;kin mathbb{Z} .\ 3.tan (2x)=0\ x=frac{pi k}{2} ;kin mathbb{Z} .\ text{Answer; }x=frac{pi k}{2} ;kin mathbb{Z} . end{array}$