FunctionHard
Question
Which of the following function has a period of 2π ?
Options
A.f(x) = sin 
+ 2 sin 
+ 3 sin 5πx
+ 2 sin + 3 sin 5πx B.f(x) = sin 
+ sin 
+ sin C.f (x) = sin x + cos 2x
D.none
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