0 个投票

I am trying to use Matlab but I don't remember basic functions. Could anyone help why Matlab couldn't plot this code?
for n=1:20
for i=-1000:1000
x=i/1000;
u=(((2*(-1)^n))/(n*pi))*((6/((n^2*pi^2)^3))-1)*sin(n*pi*x);
hold on
plot (x,u);
end
end

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Walter Roberson
Walter Roberson 2020-11-25
Ran in:

0 个投票

Ran in:
You are plotting with scalar u and scalar x. Remember that you need to plot() with at least two adjacent real-valued coordinates in a single call in order for MATLAB to draw a line.
for n=1:20
i=-1000:1000;
x=i/1000;
u = (((2*(-1)^n))/(n*pi))*((6/((n^2*pi^2)^3))-1)*sin(n*pi*x);
hold on
plot (x,u, '-*');
end

更多回答（1 个）

David Hill
David Hill 2020-11-25

1 个投票

hold on
i=-1000:1000;
x=i/1000;
for n=1:20
u=(((2*(-1)^n))/(n*pi))*((6/((n^2*pi^2)^3))-1)*sin(n*pi*x);
plot(x,u);
end

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