How to draw unit normal vector?

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Dinh Le Dung
Dinh Le Dung on 30 Aug 2022
Commented: Torsten on 30 Aug 2022
I have done all , except for the part plot unit normal vector.
Could you help we solving it, thanks a lot <3
  1 Comment
Torsten
Torsten on 30 Aug 2022
quiver3(x0,y0,z0,x0*(1+1/norm([x0,y0,z0])),y0*(1+1/norm([x0,y0,z0])),z0*(1+1/norm([x0,y0,z0])))

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Answers (2)

Matt J
Matt J on 30 Aug 2022
Edited: Matt J on 30 Aug 2022
Does the normal vector have to look like an arrow? If not, then with [nx,ny,nz] as the unit normal, you could do,
line([x0,x0+nx], ...
[y0,y0+ny],
[y0,y0+nz])

Matt J
Matt J on 30 Aug 2022
Edited: Matt J on 30 Aug 2022
Once you've plotted the sphere and plane, then with [nx,ny,nz] as the unit normal,
hold on
quiver3(x0,y0,z0, nx,ny,nz);
hold off

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