Real bad math joke: the integral of e to the x is some function F (u) to the n. You have to draw it out to get it. If you get it, you are some kind of weird math nerd, like I used to be back when the concept of zero was formulated. Also speaking of integrals on a more serious note: the integral of e to the x is e to the x.Just the idea that 3 of the most interesting and diverse constants "i" the imaginary unit = sqrt(-1), pi (the irrational number connecting the diameter and perimeter of a circle) and "e". the natural base for logarithms should all be magically related by a single equation. Well, you asked.