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Upgrading from:

NumericalMath`CauchyPrincipalValue`

New method option "PrincipalValue" has been added to the NIntegrate function of the built-in Mathematica kernel.
The add-on package is now available on the web at library.wolfram.com/infocenter/MathSource/6778.

To evaluate the Cauchy principal value of , use the "PrincipalValue" Method option for NIntegrate:

Version 5.2 $<< NumericalMath`CauchyPrincipalValue`; CauchyPrincipalValue[1/(x - x^2), {x, -1, {0}, 2}]$

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