Mathematics
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Henfe
  • Member for 11 years, 3 months
  • Last seen more than a month ago
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All Questions Answers
Score Newest
question
7
A math teacher thought of a positive integer of two digits.
Dec 11, 2012
question
7
Prove that, $f:\mathbb{R}\rightarrow \mathbb{R} $ is a isomorphism if, only if $f(x)=x $.
Aug 9, 2013
question
6
Show that $\int_0^\infty \sin\left(x^2\right)dx$ converges, but that $\int_0^\infty \sqrt{\sin^2\left(x^2\right)}dx$ does not.
Nov 26, 2012
question
6
Demonstrate that $F(x,y) = f(x,y)\sin(x^2 + y^2)$ is differentiable at $(0,0)$
Jan 7, 2013
question
5
Determine $p$ for one to have $\displaystyle\frac{1}{5}+\frac{1}{6}=\frac{1+1}{5+6}=\frac{2}{11}$, in $\mathbb{Z_p}$.
Oct 5, 2013
answer
5
Linear algebra - Dimension theorem.
Mar 1, 2013
question
4
Let $M$ be a manifold noncompact. Then there is a closed embebdding of the half line $[0, \infty)$ into $M$.
Feb 2, 2016
question
4
Show that if $x>0$, then $\ln(x)\geq 1-\frac{1}{x} $
Nov 4, 2013
answer
4
How to find $\ \lim_{n \to \infty} \frac{\log n}{\sqrt n}$?
Oct 13, 2013
question
4
How can I calculate the limit of this?
Feb 22, 2013
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17
I would like to have a counter example that Peano's theorem does not apply to spaces with infinite dimension
5
How can I do this without the cases?

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