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Is there a way to plot 3d vector functions (also known as vector-valued functions) in Wolfram|Alpha? I know it's possible to plot regular vectors, by typing in vector {2,5,3} for example, but I would like to be able to plot an equation like r(t) = <2t, cos(t)^2, t>. I've looked at the wolfram alpha documentation, and haven't been able to find a way to do this. However, WA sometimes uses different terminology than I'm used to, so it's possible there's a way and I just don't know how to articulate it to WA. Has anybody had any success doing this, or have any suggestions for how to figure it out?

(What I'm looking for is something like this:)

vector-val-func

Update:

It seems, based on my external research and the lack of responses here, that there is no way to do this with Wolfram Alpha. So, new question: is there any web app that can do this?

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Not a webapp, but a free software that can do this: spacetime.us –  Ami Dec 7 '10 at 2:19
    
Thanks for the suggestion. I already have access to desktop software which can plot graphs like these. What I am looking for is something specifically web based. –  nhinkle Dec 11 '10 at 22:12
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1 Answer

up vote 7 down vote accepted
+50

Yes, but use Mathematica notation:

ParametricPlot3D[{2t, Cos[t]^2, t}, {t, 0, 10}]

Example:

Parametric plot on wolfram alpha

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Fantastic, thank you!! I kept trying to figure this out, and couldn't. I will assign a bounty to this question and award it to you. –  nhinkle Feb 14 '11 at 9:49
    
You can often get WolframAlpha to do something by giving it the appropriate Mathematica code. –  Austin Mohr Aug 26 '13 at 22:05
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