mattecapu
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 Apr11 suggested rejected edit on If a space $X$ has no isolated points, then nor does any dense subset of $X$. Apr11 revised Fun, interesting, slightly advanced books improved formatting Apr11 suggested approved edit on Fun, interesting, slightly advanced books Apr2 comment Finding the area under curve without using rectangles @sayan chattopadhyay actually Simpson's method works with every integrable function, non only with parabolas Mar16 comment How can I find $\lim_{x \to 0}\left(\frac{e^{2\sin x}-1}{x}\right)$ without l'Hopital's Rule? Yes, probably, I'm reading from my phone so the MathJax is not formatted, but from what I see is the same Mar16 comment How can I find $\lim_{x \to 0}\left(\frac{e^{2\sin x}-1}{x}\right)$ without l'Hopital's Rule? It's a widely known limit @konstantinos, the proof I know is based on the proof of a similar limit with the logarithmic function, that in turn it's based on the definition of $e$ as the limit of $\left(1+x\right)^\frac{1}{x}$ when $x\to 0$ Mar2 comment How long does it take the average voter to vote? +1 " you could afford each person to take 24 minutes": this is a much more intuitive interpretation, and I think more correct too Jan8 comment Order of infinitesimal of $\frac{\cos x}{x}$b for $x \to \infty$ Sorry I thought it was clear: it's just the number $\alpha$ Jan8 asked Order of infinitesimal of $\frac{\cos x}{x}$b for $x \to \infty$ Nov26 revised Notation for Derivatives with Respect to Time added 1 character in body Nov17 asked Is this identity correct? Nov8 comment Domain of a solution of an ODE Well, it isn't, it's a series of segments goo.gl/2iKqlP. However check my answer edit. Nov8 revised Domain of a solution of an ODE added consideration about the derivative domain Nov7 answered Domain of a solution of an ODE Oct23 comment How do I decide what problems and how many problems to do when I try to self study? I'll skip exercises you found trivial at first sight... But maybe this isn't going to speed up your learning very much Sep30 comment Question about the proof that 'A graph with maximum degree at most k is (k + 1) colorable Great example with matrices! Sep27 revised I can't understand logical implication added 170 characters in body Sep27 answered I can't understand logical implication Sep22 comment What is the limit of this specific function? How did you pass from the limit to the derivative? Sep10 comment Replace x with -1 in $y' = \frac 32({1+x^\frac 23})^\frac 12 \ ({\frac 23 x^\frac {-1}3})$ Where is the square root? I see only cubics