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Sorry, John - but my email software did not properly
translate your html code
- odd, because the code looks fine. However, I could get the
point of what you
are saying. Yes, Serway does use the two vectors Ax and Ay -
however, he is
careful not to use the word "component" until he actually
defines the term
from the scalar lengths of those vectors. Then he drops the
vectors Ax and Ay
completely throughout the remainder of the text and only uses scalar
components. I think his presentation could have been even
stronger by leaving
out those two vectors entirely