Isn't it sad that the first post in months is only about math?

[jpsterr]

fantastic, wonderful, beautiful website:

http://www.sosmath.com/diffeq/diffeq.html

Comments

[melting_candle]

Terribly sad, but thanks anyway.

[eloquentice]

I think my dad linked me that site a while ago, but thank you for reminding me.

obviously, this just means that you should post more often.