User:Dysprosia

1. add the general formula for matrix inverse and define cofactor

 DONE Matrix inversion, Cofactor, and Minor.

1. expand the openstep entry
2. write something on sydney trains (i'm pathetic heh :)
3. (for later) get the inverse trig/hyperbolic function notations uniform...although i hae no idea which format to adopt! any ideas send them my way.