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Does anyone know how I might sum and plot the variables I have listed in my code?

Here is my code:

L = 1;

x = 0:L;

psi1 = sqrt(2/L)*sin((pi*x)/L);

psi3 = sqrt(2/L)*sin((pi*x)/L)-sqrt(2/L)*sin((3*pi*x)/L);

psi5 = sqrt(2/L)*sin((pi*x)/L)-sqrt(2/L)*sin((3*pi*x)/L)+sqrt(2/L)*sin((5*pi*x)/L);

psi7 = sqrt(2/L)*sin((pi*x)/L)-sqrt(2/L)*sin((3*pi*x)/L)+sqrt(2/L)*sin((5*pi*x)/L)-sqrt(2/L)*sin((7*pi*x)/L);

A = sum(psi1,psi3,psi5,psi7);

plot ((A),x,0,L)

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