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   sci.math.symbolic      Symbolic algebra discussion      10,432 messages   

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   Message 9,374 of 10,432   
   clicliclic@freenet.de to Nasser M. Abbasi   
   Re: The Risch algorithm   
   16 Apr 17 18:11:09   
   
   "Nasser M. Abbasi" schrieb:   
   >   
   > Maple 2016.2   
   > ============   
   >   
   > restart;   
   > integrand:=ln(x)*ln(x^2);   
   > sol:=int(integrand,x);   
   >   
   >     ln(x)*ln(x^2)*x+4*x-2*x*ln(x)-x*ln(x^2)   
   >   
   > integrand_back:=diff(sol,x);   
   >   
   >      ln(x)*ln(x^2)   
   >   
   > simplify( integrand_back-integrand);   
   >   
   >      0   
   >   
      
   It would be interesting to know which of Maple's integrators handles   
   this by default, and what happens if Maple is instructed to employ its   
   Risch integrator only.   
      
   Martin.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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