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| 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... |
| If you want a full tensor analysis system that will also do what you mention, see http://smc.vnet.net/mathtensor.html ... |
| Just for fun, I wrote a little one liner that finds all the two prime sums for a given integer. Surely not as slick as it could be if I played with it a bit, but I only had a few minutes. [mcode]twoprimesum[n_] := Extract[IntegerPartitions[n, {2}],... |
| There is no way to know how to help you unless you provide the function f[x]. |
| Totally agree with your positive comments Craig. The very high density of really smart and enthusiastic people both from Wolfram Research and end users attending is a lot of fun. I am always pleased to connect the many names I am familar from... |