how can i plot these periodic function ?

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eslam yasen
eslam yasen 2022-5-29
回答： Pratyush Swain 2022-6-29
I have zero knowledge in matlab and there is no time to learn from zero please help me!!
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eslam yasen
eslam yasen 2022-5-29
Actually it is, tommorow is the last day for submission and i dont have enought time .
I've tried to solve it with assistace of youtube and i findout it's useless .
I hope you understood my situation .
I really appreciate your words with the utmost respect .
Sam Chak
Sam Chak 2022-5-30
Okay, @eslam yasen
I understand your situation. Go back to the youtube video you watched and then type out the codes (paste them here).
Will see what can be done or improved from the codes you typed out.

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回答（2 个）

Image Analyst
Image Analyst 2022-5-30
You'll be able to do this in 2 hours if you do the 2 hour onramp course here:
MATLAB Academy - Free 2 hour training
Pratyush Swain
Pratyush Swain 2022-6-29
Hi,
You can refer the given basic implementation for (a) and can follow similarly for (b) and (c).
%intialise the values of N%
x=[2,30,100,1000];
%some arbitrary values t taken for calc,here 2 values for taken t=0 and t=0.5%
T=[0,0.5];
%initialise the output(y) as 2-D array(4x4) each row corresponds to a t value%
y=zeros(4,4);
%loop for t values%
for t=T
%set row and ind(col) as 1%
ind=1;
row=1;
%loop over all the N values%
for n = x
sum=0;
%calculate the val of func using n & t %
for i = 1:n
multiplier=(-1).^(n+1);
multiplier=multiplier*1/(2*n-1);
output=multiplier*cos((2*n-1)*pi*t);
sum=sum+output;
end
sum=sum*12/pi;
%finally store the value in y%
y(row,ind)=sum;
ind=ind+1;
end
ind=1;
row=row+1;
end
%plot to realise the values for N=[..] over t=0 and t=1/2%
plot(x, y(1,:), x, y(2,:), '.-'), legend('t=0', 't=1/2')
Hope this helps !

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