10.1.10 From the eigenfunction expansion of the Green's function show that ེ 2 (b) Σ M8 M8 n=0 sin nлx sin nлt x(1-1), 0≤x<t, n² t(1-x), t<x≤1. sin(n+1)лx sin(n+1)л (n+1)² x, 0<x<t, = t, t<x≤1.