5. Determine the value of the following integrals and sketch x:(t) and xz(t) as function of time t. Please label your sketches carefully and show all the necessary steps of the solution. Note that 8(t) and u(t) are the unit impulse and unit step functions respectively. a. xy()= sin(40)8( 1)dt + 8(r)dt b. xz(t)= | cos(3(x+2)8(2+ + 4)dt+j u(t)dt u(