(sin(4*x+8*y),cos(4*x+8*y),0)
MATLAB: *PLOT FIELD VECTOR*
matrix
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Quiver_tri arrow length
When I tried, the arrow length is adjusted with gird number.
[x,y] = meshgrid(0:0.5:2,0:0.5:2);u = cos(x).*y;v = sin(x).*y;figurequiver(x,y,u,v)
[x,y] = meshgrid(0:0.2:2,0:0.2:2);u = cos(x).*y;v = sin(x).*y;figurequiver(x,y,u,v)
As the grid starts from 0 and you have used this zero in the reciprocal to get (u,v) you will get inf in the u,v.; quiver uses maximum value of u and v to scale the arrows and plot. Try to repalce inf with some other value or avoid zero.
[x,y] = meshgrid(1:0.2:5,1:0.2:5);u = 2./x;v = 2.*y./(x.^2);figurequiver(x,y,u,v,1,'r')
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