How to plot3 using 3 equations

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Myo Gyi
Myo Gyi 2018-9-28
编辑： KALYAN ACHARJYA 2018-9-28
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ANKUR KUMAR
ANKUR KUMAR 2018-9-28
Please attach you codes and possible files (if any).
KALYAN ACHARJYA
KALYAN ACHARJYA 2018-9-28
编辑：KALYAN ACHARJYA 2018-9-28
It your code and you are not sure whether correct or not?
How do you know, it is not true?

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Torsten
Torsten 2018-9-28
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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