Answer Happy

Question 3 (a) Sketch the graph of the function 1, t<1 f(t)= 2, 1st<2 14, t> 2 (b) Show that f(t)=U(t)+U(t-1) +20(t-2) where U(t-1) and U(t-2) are step functions. (c) Hence, determine L{f(t)}.