From: didier.oslo@hotmail.com   
      
   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   
      
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