Show that a reparametrization of $\widetilde{c}$ of a parametrized curve $c$ is regular if and only if $c$ is regular.
How do I go about answering this question? I think it's essentially asking me to show that a reparametrization of a regular curve is regular. I believe $c$ is regular if $c^{'}$ ≠ 0.
(Sorry if my formatting is bad. I'm new and I'm trying to follow a MathJax tutorial)