I know you don't need Frobies method per se, but he wanted us to practice, well I got the right recursion formula, but I realize I got to it wrong...After I plugged in the assumed series solution and all its derivatives and stuff and got that big long equation, it had two terms out in front and then a third term that was the infinite series(err, the indicial equation?) I took the first two terms and set them equal to 0 seperately(which you can't do) and got r=0 from that, do that for the series term and the recursion formula comes out right. So what was I SPOSED to do at that point? Take the whole thing and solve for r or something?(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Legendre's equation with Frobenius method

**Physics Forums | Science Articles, Homework Help, Discussion**