Derivative of adjugate matrices
Saturday, August 18th, 2007We have received a question from Nathan Litke, which you all are most welcome to help out on. It is regarding so-called adjugate matrices:
“I need the derivative of the adjugate matrix, e.g. Adj([a b; c d]) = [d -b; -c a]. Are you aware of a formula for this derivative, which is valid for non-singular and singular matrices?”