Question

Укажите период функции y=3sin(5x-4)

Answer 1

y=3sin(5x-4)
T=2π/5
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Answer 2

А решение какое?

Answer 3

y =3sin(5x -4) .
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y(x+T) = y(x) ;
3sin(5(x+T) -4) = 3sin(5x -4) ;
3sin(5x -4+5T) = 3sin(5x -4) ;
5T =2π⇒ T =2π/5.