1. Suppose that a blood pulsatile wave is described by the one dimensional wave equation 32H 323-1: E5 _ E? where chat) is a blood velocity and initial conditions u(t],:i:) and $1M, am, 3:] for r = [1 are as given on plots \"(0,3 ii(0,x) Find and plot the function u(:1:,t) tor the time t = 1. Hint: try to solve it graphically