Figure 1: for question 1 1. what is the expression for the signal f(t) shown in figure 1? (a) (3t)u(0) + (3ult-2)+(-+8ult-5) (b) (hut)+-3jult-2) +(-t+3ult-5)+ (2t)u(t-8) (c) (3tult)+(-3t+3)ult-2)+(-t+5u(t-5)+ (t - 8)ult-8) (a) (3t)-3)u(t-2)+(-tut-5)+ (t)ult-8) (e) none of the above 2. the signal fe) for timet 0 is given by fe)-+2-2", what is the laplace transform of f(e)? (a) (d)? (e) none of the above 3. the signal f() for time > 0 is given by f2sin(ar)ds. what is the laplace transform of (e) none of the above 4. coasider the signal ft)--ult-2). what is the laplace transform of f(e)? (c) 0 (d) (-4+3e+e (e) none of the above