picture below;

4. COnsider the initial value problem m\"(t) +:c(t) = t), $(0) = 0, x'(0) = 0. where n f(t) = 1 + 2 Z(1)ku {t 3k). Ic=1 (a) Find the solution to this initial value problem. (b) (C) (d) Let n = 100, and plot 93(t) and f(t) for 0 S t