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Talk:Set of real numbers: Difference between revisions
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:::: Er I'll pretend this is an American/British English thing, but does it mean "x^2 = 1 has two solutions: x = 1, x = -1" is counterintuitive? Also if you are familiar with Mathematica, you would have seen the composite solutions all the time:<lang>In[1]:= Solve[x x == 1, {x}]
Out[1]= {{x -> -1}, {x -> 1}}</lang> It's not supposed to repeat the same solution in a equivalent but different form. --[[User:Ledrug|Ledrug]] 07:59, 2 October 2011 (UTC)
:::::Unfortunately I can't hide under that excuse. I don't use Mathematica, and don't often use their web site. It just looked like in their list of information on what I input that they had decided to give two solutions rather than one solution that has two components. Looking again at their web page, they don't link the two - they actually separate them with a horizontal bar the first level of visual grouping that includes them both has the heading solution'''s'''.<br> Your output from the Mathematica program that you give above is quit explicit in showing one answer with two parts by its use of brackets. I live and learn. Thanks. --[[User:Paddy3118|Paddy3118]] 11:57, 2 October 2011 (UTC)
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