Communication Matrix Homework Problem #10: How to Indicate Arrows

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Homework Statement


Problem #10 here http://i54.tinypic.com/2mn2nwp.jpg


Homework Equations


What is the idea behind a communication matrix and how to indicate the arrows of transmission?


The Attempt at a Solution


I've been a math tutor/teaching for many years and have not come across this type of problem. I can't help several students with it simply because I don't know where to start. All I need is some basic idea of what is going on here and I should be fine.
 
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The rows are labeled "from" and the columns are labeled "to". Also there are only "0"s and "1"s in the matrix. There is a transmission from "x" to "y" if and only if there is a "1" in "row x, column y" so you draw an arrow from "x" to "y" in that case.

Here, the "nodes" are A, B, and C so draw three points, labled "A", "B", and "C" and draw the arrows as I said above. For this particular problem you should have just two "doubleended" arrows.
 
HallsofIvy said:
The rows are labeled "from" and the columns are labeled "to". Also there are only "0"s and "1"s in the matrix. There is a transmission from "x" to "y" if and only if there is a "1" in "row x, column y" so you draw an arrow from "x" to "y" in that case.

Here, the "nodes" are A, B, and C so draw three points, labled "A", "B", and "C" and draw the arrows as I said above. For this particular problem you should have just two "doubleended" arrows.

Thanks! I got it.