Q5) An LTI system is characterized by the differential equation below: d d d² dt2 = y(t)+ = y(t)+16.25y(t) == x(t) dt a) Write the characteristic equation. b) Find the characteristic roots. c) Write the form of the zero-input response.

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Q5) An LTI system is characterized by the
differential equation below:
d²
d
= y(t)+ = y(t)+16.25y(t) == x(1)
dt²
dt
dt
a) Write the characteristic equation.
b) Find the characteristic roots.
c) Write the form of the zero-input response.
d) Write the final zero-input response if yzı(0)=0 and
dyzi(0)/dt=2.
e) Plot the final zero-input response in
Matlab/Octave and select the correct graph on the
side:
f) What are the characteristic modes for this system?
0
0.5
0
-0.5
0
0
5
(1)
5
(3)
10
10
0.5
-0.5
0.1
0
-0.1
-0.2
Am
0
0
5
(2)
5
(4)
10
10
Transcribed Image Text:Q5) An LTI system is characterized by the differential equation below: d² d = y(t)+ = y(t)+16.25y(t) == x(1) dt² dt dt a) Write the characteristic equation. b) Find the characteristic roots. c) Write the form of the zero-input response. d) Write the final zero-input response if yzı(0)=0 and dyzi(0)/dt=2. e) Plot the final zero-input response in Matlab/Octave and select the correct graph on the side: f) What are the characteristic modes for this system? 0 0.5 0 -0.5 0 0 5 (1) 5 (3) 10 10 0.5 -0.5 0.1 0 -0.1 -0.2 Am 0 0 5 (2) 5 (4) 10 10
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Differential equation of a LTI system

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a) characteristic equation

b) the characteristic roots 

c) the form of Zero input response

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