VP-Euler-Lagrange-no-t-dependence_back.svg Edited: Mon 29 May 2023

VP-Euler-Lagrange-no-t-dependence_front.svg Edited: Mon 29 May 2023

VP-Euler-Lagrange-no-x-dependence_back.svg Edited: Mon 29 May 2023

VP-Euler-Lagrange-no-x-dependence_front.svg Edited: Mon 29 May 2023

VP-Euler-Lagrange_back.svg Edited: Mon 29 May 2023

VP-Euler-Lagrange_front.svg Edited: Mon 29 May 2023