Recent content by brisingr7

Wow! thanks! I think I get it!

oops! the partial symbol should be on the left! also, the lower/upper limits should change seats with the integral...

Euler Lagrange Equation : if y(x) is a curve which minimizes/maximizes the functional : [SIZE="4"]F\left[y(x)\right] = \int^{a}_{b} [SIZE="4"]f(x,y(x),y'(x))dx then, the following Euler Lagrange Differential Equation is true. \frac{\partial}{\partial x} [SIZE="4"]-...