A) determine the analytical function, y(t), that is the convolution of the following rectangle function with itself: xlt =ut -uſt-5), that is: y(t)=x(t) ⓡx(t). use matlab to plot or draw by hand the plot or x(t) and y(t). b) determine the analytical function, y(t), that is the convolution of the following two rectangle functions: x(t)= (ult) –uſt–5)) and z(t)=3(u(t) -uſt- that is: y(t)=x(t)®z(t). use matlab to plot or draw by hand the plot or x(t), z(t) and y(t).