From: fateman@cs.berkeley.edu   
      
   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.   
      
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