Предмет: Математика, автор: ranfoolss

Решите уравнение подробно:

Приложения:

Ответы

Автор ответа: MrSolution
3

Ответ:

\pi +2k\pi ,\; k\in Z

Пошаговое объяснение:

 \cos^{2}x +  \cos x =  -  \sin^{2} x \\ \cos^{2}x +  \sin^{2} x  =  -  \cos x \\  \cos x =  - 1

Значит:

x=\pi +2k\pi ,\; k\in Z


ranfoolss: Да пожалуйста,не жалко
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