Emanuele Paolini
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 Apr 18 awarded Nice Answer Apr 2 awarded Necromancer Mar 23 revised Lebesgue integral - area under the curve deleted 1 character in body Mar 4 revised How to prove the following formula is a constant? deleted 34 characters in body Mar 3 answered How to prove the following formula is a constant? Mar 3 comment How to prove the following formula is a constant? what if you change variable in the integrals and let $x=\rho y$? Mar 1 revised Riemann integration of an odd function added 2 characters in body Feb 24 awarded Revival Jan 23 awarded Yearling Jan 11 comment Showing that if a function is $O(x^2)$, then it's also $o(x)$ For $x \to a\neq 0$ you have $O(x^2) = O(1)$ and $o(x) = o(1)$. And yes, they are different. Jan 8 answered Why is it unacceptable to say “the range is a function of the domain”? Jan 7 comment Showing that if a function is $O(x^2)$, then it's also $o(x)$ Whatever is $C$ one has that $C|x|\to 0$ as $x\to 0$. Jan 7 comment A positive measurable and improper integrable function is integrable yes, it is correct. Jan 7 comment A positive measurable and improper integrable function is integrable We can but not have to. Jan 7 answered A positive measurable and improper integrable function is integrable Jan 7 answered Showing that if a function is $O(x^2)$, then it's also $o(x)$ Jan 7 comment Rational and irrational numbers under base pi I don't know. But here en.wikipedia.org/wiki/Non-integer_representation you find some references. Jan 7 revised Rational and irrational numbers under base pi added 156 characters in body Dec 31 revised How to solve the integral $\int\frac{x-1}{\sqrt{ x^2-2x}}dx$ deleted 1 character in body Dec 31 answered Impossible events that actually happened