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youngann2000
@youngann2000
July 2022
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Решите, пожалуйста:
2sin^2 3x+5sin3x=0
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Gerren
Sin3x=a -1≤a≤1
2a^2+5a=0
a(2a+5)=0
a=0 2a+5=0 a=5/2 исключаем
sin3x=0
3x=pi*n
x=pi*n/3 n∈Z
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Answers & Comments
2a^2+5a=0
a(2a+5)=0
a=0 2a+5=0 a=5/2 исключаем
sin3x=0
3x=pi*n
x=pi*n/3 n∈Z