How to Plot Truncated Summation Functions without any add-ons
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Hello, I'm trying to figure out how to go about plotting a truncated summation function such as
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/900310/image.png)
without the use of any add-ons. Almost every resourse I'm finding for Matlab requires a toolbox add-on that I do not have access to, such as PDF from the stats/machine toolbox, or syms from the symbolic math toolbox. If anyone could give a hint on how to approach this, I would apprectate it.
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David Hill
on 20 Feb 2022
y=@(M,x)2/pi*sum((-1).^((1:M)-1).*cos(2*(1:M)-1)*pi/2.*x'./(2*(1:M)-1),2)+0.5;
x=-10:10;
plot(x,y(3,x),x,y(10,x),x,y(20,x));%plot vs. different values of M
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