I have been given an equation : r^2 ( d^2R/dr^2) + 2r(dR/dr) - lambda*R = 0(adsbygoogle = window.adsbygoogle || []).push({});

It says to assume R~ r^β

Then i can't seem to spot how from that information we can produce this equation:

β(β − 1) rβ + 2β rβ − λ rβ = 0

Any help would be appreciated, thanks.

**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!

# Partial differential equations , rearranging and spotting

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