prove:
1- If y is periodic then f(y) is periodic
2- (f^[n] o g)(x) =(g^[n] o f)(x)
prove:
1- If y is periodic then f(y) is periodic
2- (f^[n] o g)(x) =(g^[n] o f)(x)
1) let y =g(x)is a periodic function which period=p
Then
g(x+np)=g(x)
f(g(x))=f(g(x+np)
Thenfog(x)=fog(x+np)
So fog is periodic function
2) fog=gof is not true always
So the answer of the question is not true
1) let y =g(x)is a periodic function which period=p
Then
g(x+np)=g(x)
f(g(x))=f(g(x+np)
Thenfog(x)=fog(x+np)
So fog is periodic function
2) fog=gof is not true always
So the answer of the question is not true
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