id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1099	Elementwise Multiplication and Addition of matrices fails	imke.krueger	imke.krueger	"The following equations fail:

A =3* {{b1 ^ 2,b1 * b2,b1 * b3},{b1 * b2,b2 ^ 2,b2 * b3},{b1 * b3,b2* b3,b3 ^ 2}};


B={{b1 ^ 2,b1 * b2,b1 * b3},{b1 * b2,b2 ^ 2,b2 * b3},{b1 * b3,b2* b3,b3 ^ 2}}
+{{b1 ^ 2,b1 * b2,b1 * b3},{b1 * b2,b2 ^ 2,b2 * b3},{b1 * b3,b2* b3,b3 ^ 2}};

 
If I change it into

S = {{b1 ^ 2,b1 * b2,b1 * b3},{b1 * b2,b2 ^ 2,b2 * b3},{b1 * b3,b2* b3,b3 ^ 2}};

A=3*S;

B=S+S;

it works. 

I am currently working with the nightly build for windows from March 2009.

edit: the same applies for the der()-operator."	defect	closed	high				worksforme		imke.krueger