# Calculus of Variations

• October 31st 2007, 06:01 AM
stealthyeyes
Calculus of Variations
I have this question which I need some help please, any help will be much appreciated, thanks.
• October 31st 2007, 06:25 AM
ThePerfectHacker
Let $F(x,y,y') = \frac{1}{\lambda} \frac{(1+(y')^2)^{1/2}}{y}$.
Now substitute that into the Euler-Lagrange equations.