small Mathematica question

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Mshafee

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Dear All,

I'm a new Mathematica user. I want to define symbolic Matrices and then operate on them (getting the inverse of a matrix, multiplying 2 matrices, adding matrices,....).

Could you please send me how to start? Thanks in advance.

Best Regards,
Marwah Shafee
 

can u eloborate ur question properly????
 

these links may be of some help. its better to go thro' the materials yourself initially.

http://avaxsphere.com/ebooks/mathematica_ebooks.html


however, for your question these 2 pages give you the answer pretty convincingly i guess.

**broken link removed**
**broken link removed**

cedance.
 

AA Marwa,
You can ask Adel Abdel-Rahman. He is good at it.
BR,
Amr Ali.
 

for 2by2 matrix finding the inverse is quite easy.just rintereplace the diagonal elements and change the sign of the remaining elements.but for 3by3 matrix use the formula A.A-1=1.if u have to start matrix u can have grewal book or reliable series
 

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