urgent please help!

It's the string has its endpoints fixed at(0,0)and(L,0).If it's height and time t

A string has its endpoints xed at (0, 0) and (L, 0). If its height at m and time t is q($, t) then (to a good approximation) its total kinetic energy is E(q) = g E\" gbgda: and its total potential energy (coming from stretching tension) is T(q) = g fol qidac. The string moves to minimise the integral [0 (Ems) T