From: drhuang57@gmail.com   
      
   On Saturday, 18 November 2017 15:36:40 UTC+11, Richard Fateman  wrote:   
   > On 11/17/2017 4:34 PM, Dr Huang wrote:   
   > > Can you show your result by 'diff instead of diff?   
   > yes.   
   > in Maxima...   
   >   
   >   
   > f(x):=log(sin(x))*log(cos(x));   
   >   
   > integrate('diff(f(x),x),x);   
   >   
   > immediately returns with log(cos(x))*log(sin(x))   
   >   
   > integrate(diff(f(x),x),x); takes a long time. I killed it.   
      
   good. can you share your example by  a link? we like to just click your link   
   to play your example.   
      
   DrHuang.com   
      
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