Предмет: Математика, автор: Irinka17

решите уравнение соs8x=cos6x

Ответы

Автор ответа: AvatarDjok

cos8x=cos6x

8x=6x+2pk 8x=-6x+2pk

2x=2pk 14x=2pk

x=pk; k принадлежит Z x=pk/7; k принадлежит Z

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