View Full Version : Math Problem
MRRacine
Dec 21, 2006, 03:53 PM
I am having a problem with one equation that is ab-cd=0. I am supposed to solve for c and have been stuck on it. Can anyone help me?
CaptainForest
Dec 21, 2006, 04:49 PM
ab - cd = 0
cd = ab
c = ab / d
dittttka
Dec 23, 2006, 12:51 AM
Are you sure that you are supposed to solve it? That's an expression associated with matrix algebra called the discriminet... and if ab - cd = 0, in the matrix (a b)
(c d)
Then the matrix is invertable
Capuchin
Dec 23, 2006, 01:02 AM
Determinant, not "discriminet" :p
dittttka
Dec 24, 2006, 12:59 AM
Yeah sorry... was doing that lesson when I responded... but that aside did that help or were you supposed to solve it?
Capuchin
Dec 24, 2006, 03:43 AM
I think they were just looking for algebra, not matrices :)