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Nov
14
comment LinearSolve in Mathematica, used to find square matrix
You're right, I didn't read carefully. But the problem you state doesn't make a lot of sense. For an $n\times n$ matrix you only have $n$ equations but $n^2$ unknowns. So there are infinitely many solutions. There's always a trivial solution in the form of a diagonal matrix. The diagonal entries will just be c/b.
Nov
14
awarded  Enlightened
Nov
14
comment How to programmatically extract mathematical formulas from Word with Mathematica 9?
If you use the new style equation editor in Word 2007 and later then you can simply copy and paste formulae to Mathematica. It uses MathML as the exchange format.
Nov
14
awarded  bugs
Nov
14
answered Can I use 'ItemStyle' in 'Grid' to specify the style of individual items?
Nov
14
answered Simple while loop alternative in Mathematica
Nov
14
comment Simple while loop alternative in Mathematica
Just for fun: Block[{$IterationLimit = Infinity}, If[RandomReal[] > 0.9999, #, #0[# + 1]] &[0]]. Another: NestWhile[# + 1 &, 0, RandomReal[] < 0.9999 &].
Nov
13
awarded  Nice Answer
Nov
13
comment Is Mathematica 10 compatible with Mac OS X 10.10 Yosemite
The same dialog box has a button that will take you to the download page: support.apple.com/kb/DL1572
Nov
13
reviewed Approve suggested edit on Is Mathematica 10 compatible with Mac OS X 10.10 Yosemite
Nov
13
awarded  Nice Answer
Nov
13
revised A one line proof that one is zero using Mathematica 10
added 35 characters in body
Nov
13
answered A one line proof that one is zero using Mathematica 10
Nov
13
comment A one line proof that one is zero using Mathematica 10
Welcome to Mathematica.SE! This is a questions/answers site, and a bit different from forums you may be used to. Posts are expected to be practical and answerable questions. Please also realize that this site is independent of Wolfram Research and the people here are just users like you. It is not the place for bug reports, you'll need to contact WRI for that. That said, I believe that the behaviour you see is reasonable and won't be any different for other computer algebra systems. I'll elaborate in an answer.
Nov
13
comment How do I extract the value of a 'Style'?
It's probably best to try to avoid storing values together with wrappers like Style, MatrixForm, NumberForm, etc. Apply the wrappers only before display, but not while doing computations. We need to do the same when using Dynamic. Of course this is not an answer, just a suggestion.
Nov
13
comment Is it possible to have a function with non-global parameters?
Please see the linked question on how to construct packages. These name clashes will not happen when the standard package structure is followed.
Nov
13
comment Why is TextString[-0.5] a positive number?
@Mr.Wizard No, won't fix it. I'm really annoyed by the recent decline in quality . When one has spare time, it might be fun digging up problems like this. But when it affects our work directly, and wastes a lot of time, then it is horrible. I can imagine that after an experience like Martin's (messing up his experimental results and wasting a lot of time) many people wouldn't touch Mma with a 10 foot pole. It can't even format a number reliably!
Nov
13
comment Why is TextString[-0.5] a positive number?
@Öskå Check this out: mathematica.stackexchange.com/a/15948/12 (get the github version of the code)
Nov
13
answered Why is TextString[-0.5] a positive number?
Nov
13
revised Why is TextString[-0.5] a positive number?
edited tags