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Dec
8
comment How to construct a polynomial from a radix-term?
@HenningMakholm Ah, that makes sense. Thank you for pointing out the correct term.
Nov
27
comment Showing that $\lim_{x\to\infty}\left(\sqrt{x^2+c}-x\right)=0$
I feel dumb now.
Nov
11
comment How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
In a triangle $ABC$ with right angle in $ACB$ we define $\sin BAC=BC/AC$. This is the “geometrical” definition for $\sin$ we used.
Sep
24
comment Reducing the time to calculate Collatz sequences
@sp1rs No. See the answers linking here.
Jun
10
comment How and why did Weierstrass $\wp$ get its special symbol?
It's basically a cursive / script p.
Jun
8
comment How can I make this recurrent equation non-recurrent?
@hardmath Yes, that's what I'm trying to do. I just saw myself how trivial this question is.
Oct
20
comment How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
It's nice that you post an answer that was literally posted as the top comment to this question.
Oct
16
comment How can I find a point where an osculating circle goes through a certain point?
@Lays I couldn't find an answer to my question on the page you linked. Please note, that $P$ usually does not lay on $f$.
May
9
comment How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
@CutieKrait We defined $\sin$ by geometrical means.
Apr
2
comment Why is it impossible to define multiplication in Presburger arithmetic?
Ah, I see. Thank you for this answer.
Mar
31
comment Why is it impossible to define multiplication in Presburger arithmetic?
@MJD How are these axioms?
Mar
31
comment Why is it impossible to define multiplication in Presburger arithmetic?
@MJD Presburger arithmetic is an axiomatic system. People claim that it is impossible to define multiplication within this system. Why?
Sep
8
comment The inverse of the inscribed angle theorem
I am sorry. I usually don't ignore the orientation of angles. I should've made that clear beforehand.
Sep
8
comment The inverse of the inscribed angle theorem
Nice and easy. Thank you!
Sep
8
comment The inverse of the inscribed angle theorem
In the second case, the sign of the angle $\angle ACB$ is negative. The equation $2\angle ACB=\angle AMB$ does not holds if the signs do not match.
Sep
8
comment The inverse of the inscribed angle theorem
@Karolis I fixed the error. My bad :-(
Sep
8
comment The inverse of the inscribed angle theorem
@KarolisJuodelė No. C can be anywhere but the constraint on the angle $\angle ACB$ must hold.
Jun
21
comment Evaluating $\int_0^{\sqrt{3}}{\frac{\sqrt{1+x^2}}{x}}\,dx$
Try wolframalpha.com for evaluating integrals. It even shows a step-by-step-solution!
Jun
21
comment Given a Turing Machine T, create another Turing machine T2 such that L(T) $\neq$ L(T2)
Theorem of rice?
Jun
21
comment An equivalent statement for convergence
@clark Didn't knew that. Thanks for pointing that out! Please close my question.