Winzer said:
I did know where in the math forums to post this, hope this is right.
Do elliptic functions along with elliptic integrals have lots of applications in physics and engineering? Besides the pendulum? I guess if I wanted to solve an elliptic integral for a problem it would be help but is there any benefit from studying elliptic functions for application?
Hello Winzer,
Some time ago I found a book in a second hand bookstore (and bought it for 6.2€

) on this subject. I haven't had the time to read it yet (first I want to get Lie transformations for DE's in my head), but I will give you the info in case you would like to buy it:
"The applications of Elliptic Functions" by Alfred George Greenhill, 1959
It contains various applications, ranging from the pendulum, evolving chains, central orbits, swinging body (ships), certain lines on Mercator charts, geodesics, etc. Beware that this is a very advanced textbook, the math seems extremely complicated if you are not into it.
If you do not have any knowledge on this, I would suggest to start with some simpler functions. A good book to start with could be:
"Fourier Analysis with applications to boundary value problems" by Murray R. Spiegel, 1995
This is not a book only for Fourier series and transformations, but includes a starting study for advanced functions as Bessel, Legendre, etc. I read it from cover to cover on a -practical just do it and see- basis. I learned these functions therefore by making a lot of exercises.
best regards,
Coomast