Is the function
f(x) = 3x3 + 5
a even function or a odd function? And why?
\(f(x)=3x^3+5\\ -f(x)=-3x^3-5\\ f(-x)=3*(-x)^3+5=-3x^3+5\\~\\ f(-x)\ne f(x) \text{so the function is not even}\\ f(-x)\ne - f(x) \text{so the function is not odd}\\ \)
