Need help for mathematics problem.Signals and Systems and Newton method.

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Todor Kereziev
Todor Kereziev 2019-9-29
回答： Asvin Kumar 2019-10-3
Hello guys, I'm new here and for the first time I start using MatLab. I have some questions from my teacher that I need to be solve, but because I'm still nooby in this program I don't know how to do it, that's why I write here and ask for some help.problem 2.pngproblem 3.png
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Todor Kereziev
Todor Kereziev 2019-9-29
I just did this, and I don't know if it's true. And after that I don't know what I can do.
fy=1; %frequency in Hz
wy=2*pi*fy; %signal frequency
fs=8; %sampling frequency
t=0:4; %time interval
y=sin(2*pi*t); %signal data set
plot(t,y)

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回答（1 个）

Asvin Kumar
Asvin Kumar 2019-10-3
Consider modifying the following code for the question related to sampling:
fy=1; %frequency in Hz
wy=2*pi*fy; %signal frequency
fs=8; %sampling frequency
% fs can maybe take values 2*fy-0.1, 2*fy+0.1, 8*fy
t=0:1/fs:4; %time interval
y=sin(wy*t); %signal data set
plot(t,y)
You can adapt details from the links provided below for the remaining questions.
Convolution: https://www.mathworks.com/help/matlab/ref/conv.html
There is a file for Newton’s Method from the community on File Exchange here: https://www.mathworks.com/matlabcentral/fileexchange/28227-newton-s-method
Nelder-Mead: https://www.mathworks.com/help/matlab/ref/fminsearch.html

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