1. The problem statement, all variables and given/known data Show that (AB)*=A*B* 2. Relevant equations * = complex conjugate. A,B = Matrices, A is an nxm matrix and B is a mxl matrix. 3. The attempt at a solution Okay, last problem on this large, lovely homework assignment. I feel like theres two general ways this homework has gone. Either 1) Use summation notation to look at elements of the matrices and find that the components on each side are equal. OR 2) Use complex properties to prove the statements. I want to use route 2) as it is easier and more beautiful. But I've been staring at this, seemingly simple, statement for a while now and can't check my first move. It seems like an obvious statement. If I let C = AB, and say c is within the complex numbers. Then C* = the conjugate of C. But this isn't what I want to prove, methinks.