Hello Rooters,
I want to calculate the propagation error of inverse matrix.
Is there a direct way to do it in root?
I found an equation related to propagation error of inverse matrix from a document(attcached the document)
Here is my equation

|\sigma_{\epsilon^-1}|{ij}^2= [\epsilon^{-1}]ik^2 * [\sigma{\epsilon}]{km}^2 *[\epsilon^{-1}]_mi^2
If this is not clear please see equation 10 in the following pdf.

Could someone please help me to work on the Matrix using root?

How can I code this?

I already have inverse matrix and sigma(error ) matrix.

I guess this question is a rephrasing of this post.

Now it is clearer what you are looking for

The error in the elements of the inverse matrix coming from uncertainties in the original matrix. This is an implementation of TMatrix operations following the recipes in the pdf file. It is a very specific choice for errors in the equations and not implemented in ROOT.