588 reputation
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location St. Petersburg, Russia
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visits member for 1 year, 8 months
seen Aug 20 at 3:15

Aug
17
awarded  Nice Question
Aug
16
revised How to un-eat memory?
deleted 1 character in body
Aug
16
comment Why does Mathematica simplify $x/x\to1$?
$\sqrt{x^2}$ is also defined for $x\le0$. It's the whole point of it — to be defined for all x (it's $|x|$ in disguise).
Aug
16
comment Why does Mathematica simplify $x/x\to1$?
@Jens So how exactly do I use Assumptions for this? See update of the question.
Aug
16
revised Why does Mathematica simplify $x/x\to1$?
added 143 characters in body
Aug
16
comment Why does Mathematica simplify $x/x\to1$?
Here it's not a problem: D gives an expression, which is undefined for $x=0$. It's quite a correct result for function, which isn't differentiable at $x=0$. But then simplifying it to $0$ makes it defined at $x=0$ too, which is incorrect.
Aug
16
asked Why does Mathematica simplify $x/x\to1$?
Aug
14
revised Evaluating standard functions of general quaternions symbolically
added 64 characters in body
Aug
14
comment Does a running evaluation continue after the PC wakes from sleep mode?
I never had any problems with computation with suspend/resume cycles, but beware of small problems with interface.
Aug
14
revised Evaluating standard functions of general quaternions symbolically
added 193 characters in body
Aug
14
asked Evaluating standard functions of general quaternions symbolically
Aug
5
awarded  Nice Question
Jul
16
awarded  Critic
Jul
12
comment How to get rid of Mathematica 10's help tooltips?
Oh, indeed it's a duplicate
Jul
12
comment How do I efficiently navigate the command line interface to Mathematica?
@halirutan in fact in Mathematica 9 there are some improvements in this regard. At least some things like cycling through history do work.
Jul
12
asked How to get rid of Mathematica 10's help tooltips?
Jul
12
comment What are the standard colors for plots in Mathematica 10?
@Mr.Wizard thanks, this update is really helpful!
Jul
12
accepted What are the standard colors for plots in Mathematica 10?
Jul
12
comment What are the standard colors for plots in Mathematica 10?
Indeed, the old defaults are reproduced by first Plot in my example.
Jul
12
asked What are the standard colors for plots in Mathematica 10?