Date: Nov 7, 2013 1:16 AM
Author: did
Subject: Re: The A. F. Timofeev symbolic integration test suite

On Thursday, 7 November 2013 03:33:19 UTC+1, Nasser M. Abbasi  wrote:
> On 11/6/2013 6:16 PM, Albert Rich wrote:
>

> > I am currently transcribing the 109 integration examples in Chapter 8 of Timofeev's book.
>
> >However I am unable to figure out what Timofeev intended for examples #66 and #69 on
>
> >page 366. The integrands for #66 and #69 appear to be
>
> >
>
> > (cosh(x)^2 - sinh(x)^3) / (cosh[x)^3 + sinh(x)^3)
>
> >
>
> > and
>
> >
>
> > (tanh(x)-cosh(2x))*cosh(x)/((sinh(2x)+sinh(x)^2)*sqrt(sinh(2*x)))
>
> >
>
> > respectively, but the antiderivatives shown for them are not valid.
>
> >Can anybody out there help me out?
>
> >
>
> > Albert
>
> >
>
>
>
> Yes, there is an error/typo somewhere. difference between
>
> the derivative of the anti derivative and the integrand is not
>
> zero and not even linear constant difference. This is from
>
> the 1948 edition. May be there is a newer edition than this
>



The 1961 edition is available at
http://en.books4study.org.ua/kniga3195.html