avariced EDP'S USING LAPLACE TRANSFORMS The displacement of a semi-infinite elastic string is determined from 2+2 para x > 0. t > 0 subject to conditions u(0, t) = sin(at) 01 limx- u(x, t) = 0 u(x, 0) = 0, at It=0 = 0 Find u(x, t)