Question: Finding contravariant bases vectors and its component with Tensor

In preparation for learning GR, I need somme trick on how to use the DifferentialGEometry package or else. So I want to show you what I want to do (see the link to the document below) and I would like some help on how to do it with tensor.  That would help me a lot.  Then, I will extansion it on a 3-D problem and next in 4-D.

 

Thank you in advance dor your help

 

here is the file : Finding_covariant_and_contravariant.mw

 

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Mario Lemelin
Maple 2015 Ubuntu 14.04 - 64 bits
Maple 2015 Win 10 - 64 bits messagerie : mario.lemelin@cgocable.ca téléphone :  (819) 376-0987
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