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NikonNikov
@NikonNikov
August 2022
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Решите пожалуйста уравнение sin2x+5sinx=0
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ra1mon
Sin 2x+5sinx=0
2*sinx*cosx + 5sinx=0
sin x( 2cosx+5) = 0
sinx=0 and 2cosx+5=0
x = pk 2cosx=-5
cos x = -2,5
не имеет решений
ответ: x=pk
3 votes
Thanks 4
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Answers & Comments
2*sinx*cosx + 5sinx=0
sin x( 2cosx+5) = 0
sinx=0 and 2cosx+5=0
x = pk 2cosx=-5
cos x = -2,5
не имеет решений
ответ: x=pk