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Not a Problem
When I type an expression as {{2, 1, 3}, {1, -2, 4}} in the Algebra it is recognized and displayed as a matrix. However in Classic 6.0.546 CAS doesn't recognizes it as a Matrix and Matrix commands return question marks. When clicking in the CAS row it does show a matrix but beneath the weird result remains and commands still don' work.
chris
Files:
matrix.ggb
The same problem 
it is recognized when working with := an also if I just type the list definition {{1,2},{3,4}}, but not if I type A =
OK I should work with A:= ... but I still find the result strange
Please try in the new CAS app beta.geogebra.org/cas (we are unlikely to make any changes now in the Classic CAS View)
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