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Mathematics
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Alias K
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Mathematics undergrad.

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question
3
Prove that the Distribution of Marginal Vectors are also multivariate normal
Sep 19, 2020
question
3
How many arrangments of the word $AABBBCD$ contain the subword $AB$?
Mar 30, 2022
question
3
What's wrong with this 'proof' that probability of being $2$ m away is $1/9$?
Jul 8, 2022
answer
3
If $f(x)=\begin{cases} x-2 & x\le 0 \\ 4-x^2 & x>0 \end{cases}$, then number of points where $f(f(x))$ is discontinuous is
Aug 15, 2020
question
2
Why can we re-express the sum of group elements $g\in G$ to the sum of elements of $s\in S$ in Burnside's Lemma?
Apr 9, 2021
question
2
Distribution of the sum of $n$ brownian motions.
May 2, 2021
question
2
Show that the coordinates of $X = (d\phi)(\tilde{X})$ are $ X^i = \sum_{j}\frac{\partial u^i}{\partial \tilde{u}^j} \tilde{X}^j. $
Oct 25, 2021
answer
2
Right inverse if and only if onto
Aug 16, 2020
answer
2
How does $2\le1+2\cos x\le3$ become $\frac{2}{3}\le\frac{2}{1+2\cos x}\le1$?
Oct 11, 2020
answer
2
Obtaining the pmf of a function while knowing its mgf
Apr 16, 2021
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Writing mathematics in real time for lectures using Latex
7
Why is isolating for $x$ taught before factoring?