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Product of 4*4 matrices and taking the inverse of the result?

Sandeep Deshpande, ETH Zurich
Posted 10 years ago

Hello! I am new to mathematica and am trying to obtain the product of 44 matrices and also take the inverse of it later. O is a 44 matrix. Dia is a 4*4 matrix. 

half= O.Dia.

How to I get the fullform of matrix half than just O.dia(In the file) ? Thank you.

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POSTED BY: Sandeep Deshpande
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Hans Milton
Hans Milton
Posted 10 years ago

Hi,

As Gianluca pointed out, MatrixForm is for display only. Multiplication of matrices is done with them in their "raw" form. The result of the multiplication could be displayed by applying MatrixForm to it. Since it looks better than the raw List-of-Lists form. But the MatrixForm version of the product will no be suitable for further computations. Use the raw product if you want to carry on with calculations. Please see the attached.

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POSTED BY: Hans Milton

Thank you for the corrected file! I understood it now.

POSTED BY: Sandeep Deshpande
POSTED BY: Gianluca Gorni
POSTED BY: Sandeep Deshpande
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