Question: Determine whether f is a function from Z to R if a) f(n)=n b) f(n)=n2+1 c) f(n)=n241

Determine whether f is a function from Z to R if

Determine whether f is a function from Z to R if a) f(n)=n b) f(n)=n2+1 c) f(n)=n241

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