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