From: fateman@cs.berkeley.edu   
      
   On 11/17/2017 2:08 PM, Dr Huang wrote:   
   > mathhandbook can.   
   > http://server.mathhandbook.com/input/?guess=int%28ds%28log%28c   
   s%28x%29%29*log%28sin%28x%29%29%29%29&inp=+%28ds%28log%28sin%28x   
   29%29*log%28cos%28x%29%29%29%29   
   >   
   Apparently in mathhandbook  ds is like a quoted d/dx.  The same effect   
   can be achieved in other systems by, for example  'diff instead of diff.   
     When I used d/dx instead of ds,   
   mathhandbook could not do the integral, as expected.   
      
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