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## Homework Statement

If L(y, y', x) = y[tex]^{2}[/tex] + y'[tex]^{2}[/tex] then find the appropriate Euler Lagrange Equation. I have absolutely no idea how to solve this. I used the differential form of the Euler Lagrange equations for a stationary action but the answer i got was nothing like the answer in the book so could anyone show me how to find the equation using the differential form?