- #1
stephen cripps
- 15
- 0
Homework Statement
We have the equation
## (\frac{dr}{ds})^2+(\frac{l}{r})^2=1 ##
and want to solve to get ## r=\sqrt{l^2+(s-s_0)^2}##
Homework Equations
The Attempt at a Solution
I have worked backwards, plugging in the solution to prove that it is correct, but the closest I have gotten to actually finding the solution without using r is: ##\frac{dr}{ds}=\frac{\sqrt{r^2-l^2}}{r}##
Can anyone help with where to go from here?