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WolframAlpha[] give results but not parse!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114439] WolframAlpha[] give results but not parse!
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Sat, 4 Dec 2010 06:15:06 -0500 (EST)

In Mathematica 8.0, the following gives the expected explicit
solution, graphs, etc.:

  WolframAlpha["solve dy/dt=2y(1-y)"]

It even tells me the interpretation as "solve y'(t)=2y(1-y)".  Of
course, just using input 

  =solve dy/dt=2y(1-y)

gives the same results.

However, the following (as well as the Ctrl= input form for it) gives
no Mathematica translation of the input:

  WolframAlpha["solve dy/dt=2y(y-1)","MathematicaParse"]

It is surprising that WolframAlpha "understands" what I asked but
cannot actually tell me in Mathematica syntax the same thing!

Or am I missing something?

-- 
  Murray Eisenberg                       Internet:  murray at math.umass.edu
  Mathematics & Statistics Dept.            Voice:  413-545-2859 (W)
  University of Massachusetts                       413-549-1020 (H)
  Amherst, MA 01003                           Fax:  413-545-1801


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