Draw the surface and its normal vector. I want to insert a similar image in latex, how should I draw such a schematic? What tools should I use to draw similar diagrams? It may be used frequently in differential geometry and topology.

enter image description here

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    Welcome to TeX.SE. Have you visited the TeX.SE website, with all the information, notices, etc.? – Sebastiano Jul 19 at 9:05
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    what you try so far? where you stuck in your effort? – Zarko Jul 19 at 9:08
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    Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. Please help us help you and add a minimal working example (MWE) that illustrates your problem. Reproducing the problem and finding out what the issue is will be much easier when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – Alessandro Cuttin Jul 19 at 9:26
  • @Zarko I tried to draw a surface with Mathematica, but I don't know how to draw the tangent vector and the normal vector on the surface. – King.Max Jul 19 at 9:32
  • @King.Max Here there is a best proposal tex.stackexchange.com/questions/234094/… – Sebastiano Jul 19 at 11:48

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