Mathematics
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question
23
Probability of choosing ace of spades before any club
Apr 22, 2018
question
8
The union of two open sets is open (In metric Spaces)
Oct 1, 2017
question
7
Why the Fubini theorem fail??
Oct 6, 2019
question
7
Prove $f(x,y)$ is continuous or not continuous.
Jan 14, 2018
question
6
We lost two cards from a deck of $52$ cards. If we extract a card of this deck, what is the probability we get a diamond?
Apr 23, 2018
question
5
$X^*$ is separable then $X$ is separable [Proof explanation]
Feb 4, 2020
question
5
Suppose $z = \cos θ + i \sin θ$. If $n$ is an integer, evaluate $z^n + \bar{z}^n$ and $z^n − \bar{z}^n $.
Oct 13, 2018
question
5
Prove for definition $ $ $\lim_{x \to 0}\frac{1}{\cos(x)}=1$.
Oct 29, 2017
question
5
Prove $\bigcap_{i=1}^k\ker(f_i)\subset \ker(f)\iff f\in {\rm span}(f_1,...,f_k) $
Dec 1, 2017
question
5
Let $T:\mathbb{R}_n\rightarrow\mathbb{R}_n$ the linear operator defined by $T(p(x))=p(x)+p'(x)$ Calculate $det(T)$
Feb 6, 2018