Integrate e^3x

To integrate e^3x, also written as ∫e^3x dx, we notice that it is an exponential and one of the easiest in calculus to perform.

To solve this, we use the general rule, which is very simple, and worth remembering.

Finally, this is the answer. Solved!

As you gain more confidence, you will not need to refer to the general rule, and instead rely simply on memory. Mathematicians usually write simple integrals like this very fast to make themselves look clever!