Creating a matrix from the coefficients of equations?

Try Normal (NormalCoefficientArrays{eqn1, eqn2, eqn3}, {x1, x2, x3}2) // MatrixForm.

I am not fond of Normal Coefficient# /. Equale_, _ -> e, {x1, x2, x3} & /@ {eqn1, eqn2, eqn3} Shorter but not as clear: CoefficientFirst@#, {x1, x2, x3} & /@ {eqn1, eqn2, eqn3}.

– rcollyer Sep 16 at 18:37 3 @rcollyer Because the doc is not clear enough for my taste, and the phrase When additional "data types" are introduced, Normal should be defined to convert them, when possible, to normal expressions. Is unique in all Mma documentation. Just a maniac personality symptom, I guess.

– belisarius Sep 16 at 20:58.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.