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magic0000
@magic0000
July 2022
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3 cos 1/3x=1,5 x∈ [-2π;2π] ПОЖАЛУЙСТА СРОЧНО
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HSS9860
Verified answer
Рассмотрите такое решение:
1. cos(x/3)=1/2
2. ∡n=0. ⇒ x=π;-π
∡n=-1, ⇒ x=-2π
∡n=1, ⇒ x=2π
3. x= -2π;-π;π;2π.
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Answers & Comments
Verified answer
Рассмотрите такое решение:1. cos(x/3)=1/2
2. ∡n=0. ⇒ x=π;-π
∡n=-1, ⇒ x=-2π
∡n=1, ⇒ x=2π
3. x= -2π;-π;π;2π.