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brednevaesshkad
@brednevaesshkad
July 2022
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Решите уравнение: sin7xcos2x + sin7xcos2x=1/3
помогите, пожалуйста.
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армения20171
Sin7xcos2x+sin7xcos2x=1/3
sin(7x+2x)=1/3
sin9x=1/3
9x=(-1)ⁿarcsin(1/3)+πn
x=(-1)ⁿ(arcsin(1/3))*1/9+πn/9;n€Z
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Answers & Comments
sin(7x+2x)=1/3
sin9x=1/3
9x=(-1)ⁿarcsin(1/3)+πn
x=(-1)ⁿ(arcsin(1/3))*1/9+πn/9;n€Z