From: &noreply@axelvogt.de   
      
   On 30.11.2013 22:19, Nasser M. Abbasi wrote:   
   >   
   >> Simplifying the expression, one gets the square root of   
   >>   
   >> (1+40*t)*(1+4*t^2+81*t^4); ia this integrable in elementary terms?   
   >>   
   >   
   > Hi;   
   >   
   > Not according to Rubi 4.3.   
   >   
   > -------------------   
   > Clear[t];   
   > integrand = (1 + 40*t)*(1 + 4*t^2 + 81*t^4);   
   > Assuming[t > 0, Int[Sqrt[integrand], t]]   
   > ------------------   
   >   
   > No evaluation. Same with Maple. can't do it. Neither can Integrate[]   
   >   
   > --Nasser   
   >   
   >   
      
   It is meant to integrate 1/sqrt(expression), no?   
      
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