3- The output of a linear system is y(t)=10e-fcos4t when the input is x(t)=e-tu(t). Find the transfer function of the system and its impulse response. 4- Model the differential equation - 18% + 6V = 32 using operational amplifier ( "op amp") and other circuit components (resistor, capacitor, etc.). 5- MATLAB Optimization: Consider the problem of minimizing for below function f(x)=40(X2-X1)2+(1-x1)2 A) Plot the function using MATLAB. B) Find x that minimizes the function f(x) over the set x,2+x22s4 using I. m-file, II. GUI, and III. SIMULINK