How to plot a velocity field

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Andres Benoit
Andres Benoit on 21 Dec 2020
Edited: Andres Benoit on 21 Dec 2020
I want to plot a velocity field defined in polar coodinates as Vr = -10/r and Vt=10/r (radial and tangent coordinates, respectively), but im having some troubles, below the code that i made.
x = -4:0.3:4;
y = x;
[X, Y] = meshgrid(x,y);
Vr = -10./sqrt(X.^2 + Y.^2);
Vt = 10./sqrt(X.^2 + Y.^2);
quiver(x, y, Vr,Vt)
How can i plot it correctly?

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