How to plot3 using 3 equations

3 个评论

you can do that easily using plot3(X, Y, Z) here , implement Ei(x) first
Please attach you codes and possible files (if any).
It your code and you are not sure whether correct or not?
How do you know, it is not true?

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 采纳的回答

r0=10.0;
z0=1.0;
a=0.1;
nu=1.0;
Gamm_inf=1000;
t=0:0.05:10;
z=z0*exp(2*a*t);
r=r0*exp(-a*t);
w=a*r.^2/(2*nu)
w0=a*r0^2/(2*nu);
theta=-Gamm_inf/(8*pi*nu)*((1./w.*(1-exp(-w))-1/w0*(1-exp(-w0)))-expint(w)-expint(w0));
[x y]=pol2cart(theta,r);
plot3(x,y,z)

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