Thread: matrix proof 2

Can someone please help me with is as i really hate doing matrix proof

Originally Posted by nerdo

Can someone please help me with is as i really hate doing matrix proof

for part a, multiply the matrices then take the determinate. that is det(ab). then take det(a), det(b) separately and then find det(a)det(b) then show they are equal.

Originally Posted by GaloisTheory1

for part a, multiply the matrices then take the determinate. that is det(ab). then take det(a), det(b) separately and then find det(a)det(b) then show they are equal.

Oh i get it know, thanks for the help.

For the second part, take the determinant of both sides





Therefore no such matrices exist

Originally Posted by SimonM

For the second part, take the determinant of both sides





Therefore no such matrices exist

thanks i thought it was false, i was trying to figure it out for a while.