cos(π+2х)=1
-(cos(2x))=-1
cos(2x)=-1 => cos(t) -1 для:
t=π+2kπ, k€Z то 2х=π+2kπ, k€Z.
2x=π+2kπ, k€Z
Ответ: x=π/2+kπ, k€Z.
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
cos(π+2х)=1
-(cos(2x))=-1
cos(2x)=-1 => cos(t) -1 для:
t=π+2kπ, k€Z то 2х=π+2kπ, k€Z.
2x=π+2kπ, k€Z
Ответ: x=π/2+kπ, k€Z.