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murkinalyudmila
@murkinalyudmila
August 2021
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Пооммооогите решиииттьььь уравнение:
0,5(cos^2(x)+cos^2(2x))-1=2sin2x-2sinx-sinx*sin2x
В конечном итоге(упрощая) надо прийти к строчке : (sin2x-sinx)(sin2x-sinx+4)=0
,а дальше можно не решать, я знаю как.
И найти корни в промежутке [-1;1,5]
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