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I need help with drawing tubular surface around curve. It is for my college project but we never used program like Sage so I don't know how to use it properly. We have Curve c(t)=(2cos(t),2sin(t),0.5*t) and I need to draw tubular surface around it. I need to calculate Frenet Trihedron and use it in some formula for tubular surface.

Here is the formula:

formula

My question is how do I make 3d projection out of this formula?

rickhg12hs
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Leon1403
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    Welcome to Math.SE! <> The Frenet trihedron for this helix can be calculated explicitly by hand, which then leads to an explicit parametrization for the tube. Is the question how to plot a parametric surface in Sage? (If so, it's likely someone here knows how, though the question may be sort of off-topic.) – Andrew D. Hwang Jan 02 '22 at 19:28
  • Yes, my question is how to plot a parametric surface in Sage. Sorry if it is off-topic. – Leon1403 Jan 03 '22 at 09:40

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