Mathematics
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Valent
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All Questions Answers
Score Newest
question
6
Let $f:\mathbb{R}^2\to\mathbb{R}$ be a $C^1$ function. Prove that the restriction is not injective.
Nov 16, 2013
question
6
Prove that $\exists k\in \mathbb{N}^*$ such that $\|a-a_k\|<\varepsilon$
Jun 23, 2015
answer
4
Calculate $\displaystyle \lim_{x \to 0} \frac{\sin(x)}{x + \tan(x)}$ with out derivative?
May 10, 2014
answer
4
Why does $r = \cos \theta$ produce a circle?
Dec 10, 2013
question
4
Is this a group or a vector space?
May 15, 2022
question
4
Finding $\iint_S \nabla \times F\ dS$
Aug 4, 2021
question
4
How can I solve this O.D.E.?
Jul 1, 2014
answer
4
Proving a set is countably infinite $\left \{q \in \Bbb Q:q=\dfrac{a}{b}\ \text{where $a$ is even and $b$ is odd} \right \}$
Nov 26, 2013
answer
3
Show that vector field is $C^\infty$ and calculate its Jacobian matrix at $(0,1,1)$
Mar 6, 2021
answer
3
Inverse triangle inequality on $\mathbb{R}^n$
Feb 15, 2021
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What internal command(s) does \hspace call?

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