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Mathematica is running and running !

sebastian bahamonde

Posted 9 years ago

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Hi ! I have a big problem with my research. I calculated the variational of a curvature functional by hand (deltaVcurv), and I am trying to compute the Euler-Lagrange equations of a functional with Mathematica and then the vector aeom. When I try to subtract these results, it takes days and days running and nothing happens. I am trying to verified that my calculation by hand is right so I need a zero in the final answer. What can I do? Am I doing something wrong? Why do you think it take so much time? Attachments:

POSTED BY: sebastian bahamonde

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Posted 9 years ago

Well, one thing to recognize is that your expression check3 has ten million leafs.... it is a phenomenally large and complex expression. In[29]:= LeafCount[check3] Out[29]= 9739075 Perhaps the best approach is to take the steps in Mathematica that you took "by hand" and verify your expressions along the way.

POSTED BY: David Reiss

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