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Alex01011
@Alex01011
July 2022
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cos(x/2)+cosx=0
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lizabodman
Cos(x/2)+2cos^2(x/2)-1=0
Cos(x/2)=-1 или соs(x/2)=0,5
X/2=-п+2пk
X=-2п+4пk
Или
Х/2=+-п/3+2пк
Х=+-2п/3+4пк
Ответ: -2п+4пк; -2п/3+4пк; 2п/3+4пк
6 votes
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Answers & Comments
Cos(x/2)=-1 или соs(x/2)=0,5
X/2=-п+2пk
X=-2п+4пk
Или
Х/2=+-п/3+2пк
Х=+-2п/3+4пк
Ответ: -2п+4пк; -2п/3+4пк; 2п/3+4пк