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MathGroup Archive 1995

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Problem with Solve and O[x]

  • To: mathgroup at christensen.cybernetics.net
  • Subject: [mg1254] Problem with Solve and O[x]
  • From: steve at tweedledee.ucsb.edu (Steve Trainoff)
  • Date: Fri, 26 May 1995 07:50:57 -0400
  • Organization: University of California, Santa Barbara

It appears the Solve and O[x] don't mix.  Consider the following.

Mathematica 2.0 for NeXT
Copyright 1988-91 Wolfram Research, Inc.

In[1]:= Solve[x+z==1,x]

Out[1]= {{x -> 1 - z}}

In[2]:= Solve[x+z==1+O[z],x]

Out[2]= {{x -> 1}}	(* I would prefer x -> 1 + O[z] *)

In[3]:= Solve[x+z==1+O[z]^2,x]

Out[3]= {}		(* What is wrong with x -> 1 + z + O[z]^2 ??? *)

--

..STeve
------------------------------------
Insert pithy maxim here...
steve at tweedledee.ucsb.edu (NeXT mail)


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