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Lelia17Hawk97
@Lelia17Hawk97
July 2022
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упростите выражение ctg^2x*sin^2x-cos^2x. Найдите значение при x= п/90
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Answers & Comments
mihaender
1)
y = Корень (2) * sin (2x-Пи/4)
Область значений = (-Корень (2) , Корень (2) )
2)
Сокращаем на ctg x
ctg x = 1
x = Пи/4 + Пи*n
или
x=Пи/2 + Пи*n
2 votes
Thanks 1
mihaender
спс
mihaender
огромное за лутший ответ
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Answers & Comments
y = Корень (2) * sin (2x-Пи/4)
Область значений = (-Корень (2) , Корень (2) )
2)
Сокращаем на ctg x
ctg x = 1
x = Пи/4 + Пи*n
или
x=Пи/2 + Пи*n