Richard Harrison wrote:

Keith wrote:
"I do not find that step 7) is in error."

Step 7) declares power is zero at quarter wave points where volts or
amps are zero in the standing wave pattern.

Unfortunately, probably due to my poor description, you have missed
the point I was trying to make.

You are, I think, disagreeing with the RESULT of step 7.

Even though the result may be wrong, step 7) can be correct.

Step 7) again:
"7) From 6), the energy crossing quarter wave points is 0"

This is saying that if the result of step 6) is correct, then
the result of step 7) is correct. The transformation from 6)
to 7) merely integrated power to get energy; a common and
correct thing to do.

So if you disagree with the result of step 7), it is in step 6)
which you must search for the error since step 7) is correct.

If step 6) is correct, then search in step 2) and step 5) for
the error.

I suspect that like Cecil, you will end up at step 2) as the
source of what you perceive to be an error.

Then, when we resolve whether 2) is in error, we will know
whether the result of 7) is in error.

....Keith