Plotting symbolic equation along an array.

Question

Dillon Trimmell 2022-10-17

回答： Torsten 2022-10-17

I am trying to plot the symbolic function:

I have expressed the function using syms for f(x),x,n

the trouble I am having is with x, x is a value from 0<x<L. where L is a arbitrary number. 100 for example.

how would I plot 0:L on the x axis and the function of f(x) on the y axis. for each n.

thank you for the help.

heres what I got so far with my script

Answer 1

Torsten 2022-10-17

Is the really the function you calculated the Fourier series of ?

L = 10;

nx = 100;

nmax = 200;

x = (linspace(0,L,nx)).';

n = 1:nmax;

f = ((-1).^n-1)./(n.^2*pi) .* cos(n.*x) + (1-2*(-1).^n)./n .* sin(n.*x);

values = -pi/4 + sum(f,2);

plot(x,values)