A causal 4th order FIR digital filter, where its impulse response is symmetrical about its mid-point, has the following 3 values of the step response (i. e., the input is a step u(n)): y(n)=box(n)+b1x(n-1)+b2x(n-2), b3 x(n-3)+b4x(n-4), bo=0.02840647, b1=0.23700868, b2=0.469170166, b3=-.734585316, b4=0 y(0) = 0.02840647, y(1) = 0.26541468, and y(2) = 0.734585316. M) Determine the impulse response h(n). Is the filter stable?
N) Write an expression for the frequency response H(ejw). Hence, plot the magnitude and phase response. Identify the type of filter it represents?
0) Determine the difference equation of the system?
P) Draw the block diagram of the difference equation of the filter. How many multiplications and additions do we need for each sample?
Q) Determine the steady-state output yss(n) if the input signal is given by: x(n) = 10u(n) + 5 cos(0.5tn)u(n).

the question concerns exactly this part of the speech:

i am not now thinking of the loss of property involved, immense and serious as that is, but only of the wanton and wholesale destruction of the lives of non-combatants, men, women, and children, engaged in pursuits which have always, even in the darkest periods of modern history, been deemed innocent and legitimate. property can be paid for; the lives of the peaceful and innocent people cannot be.

president wilson talks about the lives of people destroyed by german army. but these people are not americans, they are the local people living in europe. the president mentions the barbarity of germans, considering that he is not targeting the nation, instead it is said about german army. the correct answer is the last one.

- "these rights are natural and god-given to all men equally." (i disagree cuz i kind of think it's 'a' but who knows.)

the answer would be c : illustrate that this type of suffering is unimaginable. just took the test