# Injective function that is not surjective

I'm trying to find an example of a continuously differentiable function from $\mathbb{R}$ to $\mathbb{R}$ that is injective but not surjective.

I can easily find one from $\mathbb{Z}$ to $\mathbb{Z}$ but I'm having difficulty finding one for the reals.

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What's the one you have for the Integers? –  JB King Mar 5 '13 at 0:11