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Jun
4
comment Is $.\overline{9} = 1$?
@milo 8.999... = 8 + 0.999... simply follows from the decimal representation of the numbers involved.
Apr
9
awarded  Notable Question
Dec
17
comment Explanation of method for showing that 0 / 0 is undefined
No. I don't claim so. The whole post is a reductio ad absurdum. ("Let's say $0 \over 0$ was not indeterminate, then what should its value be?")
Dec
17
comment Explanation of method for showing that 0 / 0 is undefined
@Anixx It's a common mathematical process: since the property is true for all $x > 0$ and for all $x < 0$ and $x \in \mathbb R$, then the property is also extended by continuity for $x = 0$. Of course doing it here does not lead to a correct result: that's the whole point of the answer.
Dec
16
awarded  Caucus
Nov
11
awarded  Yearling
Oct
29
revised How to accurately calculate the error function erf(x) with a computer?
Removed signature (please add URLs to your profile insted)
Oct
29
suggested approved edit on How to accurately calculate the error function erf(x) with a computer?
Oct
10
comment How can I approximate the logarithm of the sum?
@Rahul Wait, is $\log(1+\frac ab) \simeq \frac a b$?! That sounds... very strange.
Oct
10
asked How can I approximate the logarithm of the sum?
Oct
2
awarded  Notable Question
Sep
30
awarded  Explainer
Jul
15
awarded  Popular Question
Jul
2
awarded  Curious
Jun
12
awarded  Nice Answer
Jan
19
revised Is $.\overline{9} = 1$?
demoNstrandum
Jan
2
revised Number of arbitrary constants in the general solution of an ODE
Backtick abuse.
Jan
2
suggested approved edit on Number of arbitrary constants in the general solution of an ODE
Oct
3
awarded  Popular Question
Jun
13
comment Why is $n$ divided by $n$ equal to $1$?
@Blue I think it's not so much that rules start making demands of us, but rather that it might be worth exploring how far you can extend the nice $a^{m+n}$ property so that it applies in more complex cases like (say) calculating $\sqrt[5]{a^4} \cdot \sqrt[5]{a^6} = a^\frac45\cdot a^\frac65 = a^2$.