MathGroup Archive 2012

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Re: Unrelated variable affects rsolve result

Generally, it is best to avoid names starting with capital letters in Mathematica.  This way you can make sure that none of your symbols will conflict with system symbols.

If you evaluate


you will see that K is a system symbol.  For some reason it is not protected, and I have never seen any use of it.  But apparently it can cause trouble, as you show in your example.


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