Hi, this is just a question about the rules for solve the system of linear equations by using Cofactor expansion. My professor wants me to solve a matrix and he put the question like this:

Question

anonymous · Answer

I know how to solve for (a) and (c) but I cant find anything on the internet or in my text book for solving by using cofactor expansion. All that I can find about cofactor expansion is related to cramers rule.

anonymous · Answer

Thank you

anonymous · Answer

How do you solve the system of linear equations by using Cofactor expansion?

phi · Answer

Maybe they mean use cofactors to write the inverse of the matrix

anonymous · Answer

My prof usually asks for the inverse in a clear manner. Arrrg I'm just not sure what that could mean. I dont think its the inverse.

phi · Answer

cofactor expansion is how to find the determinant...
But I don't know what "use cofactor expansion to solve a set of linear equations" means.

anonymous · Answer

Yeah :( Im just gonna have to find him and ask haha thanks