C chk2 New member Joined Oct 24, 2013 Messages 3 Nov 8, 2013 #1 hi! I have a problem with the following question. 1.Give an example to matrix 2(R) so that A2=0 and . i dont know even how to start... 2. Give an example to 3 matrices 2(R) that all thier limbs\neq0 so that AC=BC and . thanks!!