(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The FTC states that

[tex]{d\over{dx}}\int_a^x f(t)dt = f(x)[/tex]

Now, how do I do something like

[tex]{d\over{dx}}\int_a^{g(x)} f(t)dt = ?[/tex]

2. Relevant equations

3. The attempt at a solution

I know that it has to do with the chain rule, but I forgot my textbook at school and I can't seem to find it online (e.g. Wikipedia).

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# Fundamental Theorem of Calculus problem

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