Mathematics
user avatar
user avatar
user avatar
Pocho la pantera
  • Member for 8 years, 9 months
  • Last seen more than 3 years ago
Profile Activity
Stats
2,376
reputation
106k
reached
98
answers
3
questions
Communities
About

Interested in Real Analysis and Differential Equations... and the pachanga!

Badges
View all badges
This user doesn’t have any gold badges yet.
9
silver badges
17
bronze badges
Top tags
View all tags
34
Score
19
Posts
19
Posts %
27
Score
11
Posts
11
Posts %
19
Score
25
Posts
25
Posts %
17
Score
12
Posts
12
Posts %
15
Score
10
Posts
10
Posts %
15
Score
5
Posts
5
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
question
9
supremum of $\int |\int f(x)-f(y)\,dy| \,dx $.
Sep 28, 2013
answer
7
Is there limit $ \lim_{(x,y) \to (0,0)} \frac{x^3}{x^2 + y^2}$?
Sep 13, 2013
answer
7
Prove $\frac {1}{\cos 0^\circ \cdot \cos 1^\circ} + \ldots +\frac {1}{\cos 88^\circ \cdot \cos 89^\circ}= \frac{\cos 1^\circ}{\sin 1^\circ}$
Sep 30, 2013
answer
6
If $(\nabla f(x)-\nabla f(y))\cdot(x-y)\geq m(x-y)\cdot(x-y)$, why is $f$ convex?
Sep 4, 2013
answer
5
Prove $n^2 > (n+1)$ for all integers $n \geq 2$
Aug 30, 2013
answer
5
Proving $\sum_{n \geq 1} \frac{a_n}{1+ a_n}$ diverges provided $\sum a_n$ diverges and $(a_n)$ is decreasing and nonegative
Aug 31, 2013
answer
5
A difficulty solving a limit
Oct 9, 2013
answer
5
Prove $\frac{1}{2} + \cos(x) + \cos(2x) + \dots+ \cos(nx) = \frac{\sin(n+\frac{1}{2})x}{2\sin(\frac{1}{2}x)}$ for $x \neq 0, \pm 2\pi, \pm 4\pi,\dots$
Oct 9, 2013
answer
5
$(0 \leq f' \leq f$ on $\mathbb R$ and $f(a)=0)$ $\implies f=0$?
Oct 28, 2013
answer
4
If the absolute value of an analytic function is constant, then the function itself is constant.
Sep 5, 2013

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.