A function f:R→Rf: \mathbb{R} \to \mathbb{R}f:R→R is defined as f(x)=x3+x+1f(x) = x^3 + x + 1f(x)=x3+x+1. Is this function invertible?
Yes, it is strictly increasing
No, it is not one-to-one
Yes, it is an even function
No, it is not onto