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Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: Error in substitution?
Replies: 4   Last Post: Nov 9, 2010 6:08 PM

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K. E. Pledger

Posts: 1,235
Registered: 12/3/04
Re: Error in substitution?
Posted: Nov 9, 2010 4:46 PM
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In article <efiCo.134638$tb2.5941@newsfe06.ams2>,
"Andrew Holme" <ah@nospam.com> wrote:

> Please see page 3 of
> http://www.research.telcordia.com/society/TacCom/papers98/21_07i.pdf
>
> Equation 19-a is obtained by substituting 17 into 18.
>
> Is there an error in the paper at this point?
>
> I don't get the same result for 19-a....


Neither do I. Neglecting the fourth and higher powers of
(gamma).cos(phi) for some physical reason which I don't understand, it
seems that (19-a) ought to be

alpha_I = (4/sqrt(2.pi)).gamma.cos(phi)
+ (1/sqrt(2.pi))(8/(3.pi) - 2/3)((gamma.cos(phi))^3).

Is that what you get?

Ken Pledger.

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