Recent content by dellatorre

thank you all :-))

thank you

Looking for help with a problem I'm working on: "Show that matrix [0 -1 0] [-1 0 0] [0 0 1] for a reflection about line y=-x is equivalent to a reflection relative to the y-axis followed by a counter-clockwise rotation of 90 degrees." So for my answer, first I have for the reflection...

ok, maybe its not the cross product I need to do then. The problem I'm struggling with is this: "Show that matrix [0 -1 0] [-1 0 0] [0 0 1] for a reflection about line y=-x is equivalent to a reflection relative to the y-axis followed by a counter-clockwise rotation of 90...

How do I take the cross product of Two 3x3 Matrices. For example what is cross product of: [-1 0 0] [0 1 0] [0 0 1] x [0 -1 0] [1 0 0] [0 0 1] thanks, Della