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zulchik
@zulchik
July 2022
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3cos(2x+p/3)=-1,5 помогите решить.
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polinapoly96
3cos(2x+p/3)=-1,5
cos(2x+p/3) = -1,5 / 3
cos(2x+p/3) = -1/2
1 корень : 2x+p/3 = П/3 + 2пк
2х = п/3 - П/3 +2пк
2х = 2пк
х= пк
2 корень: 2x+p/3 = - П/3 + 2пк
2х= -П/3 - П/3 + 2пк
2х = -2П/3 +2пк
х= -2П/6 + пк
3 votes
Thanks 2
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Answers & Comments
cos(2x+p/3) = -1,5 / 3
cos(2x+p/3) = -1/2
1 корень : 2x+p/3 = П/3 + 2пк
2х = п/3 - П/3 +2пк
2х = 2пк
х= пк
2 корень: 2x+p/3 = - П/3 + 2пк
2х= -П/3 - П/3 + 2пк
2х = -2П/3 +2пк
х= -2П/6 + пк