[julia-users] Re: Linear-Equation-System Solver("\") does not work reliably for the "Rational" Type

[Kurolong]

Thank you, this was very helpful.
Just a small question: Are the UpperTriangular and LowerTriangular commands 
actually necessary in some case?
The other question i have is what A_div_B! actually does in this case, but 
i have a feeling that this is hard to explain.