1. Determine the unit step sequence of the following systems whose impulse response
are given below.
(a) h(t) = te-tu(t) (b) h(t) = et costu(t)
(c) h(t) = e-5tu(t-2) (d) h(t) = u(t-3)+u(t+2)
2. Perform convolution of the following signals by graphical method and sketch the