Show the code and maybe someone can see where you are going wrong. Also,
this function has limits. How big is your matrix?

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Regards,
Tom Ogilvy

"Al" wrote in message
om...
how can I invert a mtrix of variable size. the size of my input matrix
changes depending on user input. after the user enters data i need to
invert this matrix using MInvert function in excel. However it gives
me an error because i know the szie of the matrix only at run time.
Can you help me please?

thank you