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These are questions asked by yunlongwang





As you can see, could you know how many columns of matrix ee has?

It is not easy.

The true column number is 7.

Is there a good method to sperate differetn columns apart? for example, use comma



Maple always treat A as a scalar. How to solve this problem? Thank you.




Hi, I hope to use symbol A, B, directly to get C derivation, without using elements forms of matrix, as shown below.

How to achieve this? 

Thank you.


I created my own package and one procudure inside this package is to calculate the eigenvalues of a identity matrix, as shown below




Then, I use this package in another document, all other procedures work well except the procedure calculating egigenvalues, as shown below




How to solve this problem? Thank you.

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