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A simple Google search for key words mathematica origami shows some interesting projects, for example, [Mathematica Origami Demonstrations][1] [1]: http://demonstrations.wolfram.com/search.html?query=origami
Your attached file is basically empty. Why not put your code in your main message so we can see what you tried to do?
Your image appears to be missing. If you have Mathematica code, include that, not as an image, but as a code block.
I usually find it easiest to put the dependency on t into the object or not as in In[1]:= a Cos[alpha[t]] Out[1]= a Cos[alpha[t]] In[2]:= D[%, t] Out[2]= -(a Sin[alpha[t]] alpha'[t]) ...
Are you trying to answer this using Wolfram Alpha or Mathematica? If yes, what have you tried? If not, this is not a forum for homework or general math questions, only for the use of Wolfram software systems. In any case, your equation just...
Not sure from your question exactly what you are asking. My guess is that if you use something like (2 | 2 x -7 |) + 6 > 16 you will get a useful answer. If this is not exactly what you want, you should be able to see how to edit it. What...
Thanks to David for posting an answer. The MathTensor web site and email address are down right now due to the fire. I am getting new computers next week and hope to have things back up soon. The software is still available due to backups and I...
I and others have been receiving email wondering what has happened with the MathGroup mailing list and newsgroup. As founder and moderator of those groups, here is what the status is. On May 23rd, I had a major house fire at my home/office in...
This Community is made available for the discussion of Wolfram products and services. Make sure your posts are related to Wolfram Technologies and clearly indicate the relation. Please do not post off topic content. This is not a general Mathematics...
If you want a full tensor analysis system that will also do what you mention, see http://smc.vnet.net/mathtensor.html ...