From: Albert_Rich@msn.com   
      
   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   
      
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