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Re: DSolve question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg88811] Re: DSolve question
  • From: Bill Rowe <readnews at sbcglobal.net>
  • Date: Sat, 17 May 2008 05:30:28 -0400 (EDT)

On 5/16/08 at 5:37 AM, igwood at yahoo.co.jp (igwood) wrote:

>Below is the code that works. Clearly Mathematica recognizes output
>in curly braces {  } differently than that without.

Did it seem surprising to you Mathematica sees things in curly
braces differently that without them?

If so, it shouldn't. Mathematica uses curly braces to denote a
List. If no curly braces are present, then whatever expression
you have is not a List. Since lists are different than say
symbols, numbers, general expressions and other objects,
Mathematica treats them differently as should be expected.

If it truly was surprising to you output in curly braces was
different than without curly braces you should review the
material that can be found by selecting Help->Documentation
Center then clicking on the second item (Lists) under Core
Language paying particular attention to the information in the
tutorials listed at the bottom of the page that comes up after
clicking. Lists are a very fundamental construct in Mathematica.
You will undoubtedly have difficulties getting Mathematica to
perform as you want without having a fairly good grasp of lists.


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