Fourier sine series plotting first term, first five term, and first 15 terms on one graph
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Katie Beeler
am 4 Mär. 2024
Kommentiert: Katie Beeler
am 4 Mär. 2024
I need help plotting only the first terms of my fourier sine series, then the first five terms, and the first fifteen terms on one graph. This is my code thus far:
x = 0:0.1:25;
n = 10;
ysin = fsin(x,n);
plot(x,ysin),grid
xlabel('x'),ylabel('sin function')
% Define functions
function f = fsin(x,n)
f = zeros(1,numel(x));
f = 2;
for i = 1:n
an = -4*(cos(i*pi/2)-1)/(i*pi);
f = f + an*sin(i*pi*x/50);
end
end
For reference my series is
. I made L = 50 and my sum is running from n=1 to infinity.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1634021/image.png)
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Akzeptierte Antwort
Walter Roberson
am 4 Mär. 2024
x = 0:0.1:25;
n = 1;
ysin = fsin(x,n);
plot(x,ysin)
hold on
n = 5;
ysin = fsin(x,n);
plot(x,ysin)
hold on
n = 15;
ysin = fsin(x,n);
plot(x,ysin)
hold on
grid on
xlabel('x')
ylabel('sin function')
hold off
% Define functions
function f = fsin(x,n)
f = zeros(1,numel(x));
f = 2;
for i = 1:n
an = -4*(cos(i*pi/2)-1)/(i*pi);
f = f + an*sin(i*pi*x/50);
end
end
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