Timeline for How to make Jacobian automatically in Mathematica

9 events

when toggle format	what		by	license	comment
May 19, 2012 at 15:04	vote	accept	George Mills
May 19, 2012 at 15:04
May 19, 2012 at 15:04	vote	accept	George Mills
May 19, 2012 at 15:04
May 19, 2012 at 15:03	comment	added	Jagra		Your comment code, a = ( { {x1^3 + 2 x2^2}, {3 x1^4 + 7 x2} } ); b = ( { {x1}, {x2} } ); defines 2 matrixes. Placing the terms in vectors they should look like this: a ={x1^3 + 2 x2^2,3 x1^4 + 7 x2}; b = {x1, x2};
May 19, 2012 at 15:00	history	edited	Jagra	CC BY-SA 3.0	edited body
May 19, 2012 at 14:56	comment	added	George Mills		it is not working as Needs["VectorAnalysis`"] a = ( { {x1^3 + 2 x2^2}, {3 x1^4 + 7 x2} } ); b = ( { {x1}, {x2} } ); JacobianMatrix[a, b] // MatrixForm
May 19, 2012 at 14:48	history	edited	Jagra	CC BY-SA 3.0	more code and output
May 19, 2012 at 14:31	comment	added	George Mills		How to print matrix J, to see output?
May 19, 2012 at 14:29	comment	added	George Mills		it is not working as JacobianMatrix[a_List?VectorQ, b_List] := Outer[D, a, b] /; Equal @@ (Dimensions /@ {a, b})
May 19, 2012 at 14:23	history	answered	Jagra	CC BY-SA 3.0