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location Buenos Aires, Argentina
age 21
visits member for 4 years
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May
4
comment How to prove $\lim_{(x,y)\to(0,0)} \frac{xy}{x+y} = 0$
@ArturoMagidin: Oh, I thought you could just sort of ignore it. This means that the limit doesn't exist, then?
May
4
comment How to prove $\lim_{(x,y)\to(0,0)} \frac{xy}{x+y} = 0$
@Dylan: Well, the function is not even defined along that line. Does that matter?
May
4
asked How to prove $\lim_{(x,y)\to(0,0)} \frac{xy}{x+y} = 0$
Apr
30
comment Can I apply Rolle's theorem in reverse?
Thank you for your answer. While it helped me with the problem, David's answered the point of the question, so I accepted his. Thank you anyway.
Apr
30
accepted Can I apply Rolle's theorem in reverse?
Apr
30
comment Can I apply Rolle's theorem in reverse?
@ArturoMagidin: I fixed the intervals.
Apr
30
revised Can I apply Rolle's theorem in reverse?
fixed intervals
Apr
30
asked Can I apply Rolle's theorem in reverse?
Apr
30
comment Natural Logarithm and Integral Properties
@GiovanniDeGaetano: It looks like the whole point of the exercise is to prove that $(\ln x)' = \frac1{x}$, and establish its properties.
Apr
27
accepted Proving statement about sequences
Apr
27
comment Limit inside an integral
No, $\int \ \mathrm{d}x = x + C$.
Apr
27
comment Limit inside an integral
@AbdelmajidKhadari: You're missing an $x$ after integrating.
Apr
27
asked Proving statement about sequences
Apr
25
comment Calculating derivative of $\operatorname{Log}(z)$
Differentiate both sides of the first equation, maybe?
Apr
19
comment How to find the Maclurin Series with using the procedure method for $ f(x)=\sqrt{1+2x} $
Shouldn't the limit of the sum be $n$, not $\infty$?
Apr
14
accepted Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
Apr
14
comment Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
Please see my edit, it seems my question wasn't too clear.
Apr
14
comment Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
@DavidMitra: Please post that as an answer, it's pretty much what I'm looking for.
Apr
14
revised Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
added 265 characters in body
Apr
14
asked Proving limit doesn't exist using the $\epsilon$-$\delta$ definition