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I have read Finding a 3D transformation matrix based on the 2D coordinates but I think my situation is different because I think I need a 4x3 matrix, not ...
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Write down the set of distinct solutions and prove your list is complete. $x$ and $y$ are positive integers. I have rewritten it as $\frac{(x+y)}{xy} = \f...
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How many positive, three-digit integers contain at least one $3$ as a digit but do not contain $5$ as a digit? I have an answer for that which is $215$ ,i...
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Let $\{W_t\}$ be a standard Wiener process on a probability space $(\Omega, \mathcal{F},P)$. Let $\mathcal{F}^W$ be the natural filtration generated by $\...
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I was calculating an integral that I thought it'd be easy however it turned out very weird. I couldn't figure out so I'm looking for some h...
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I think something is wrong with the principle of explosion, because according to it, if I know $P\wedge \lnot P$, I can deduce $Q$ though I don't kno...
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$ABC$ is an acute angled scalene triangle. $L,M,N$ are midpoints of the sides $BC,CA,AB$. The perpendicular bisectors of $\overline{AB}$ and $\overline{CA...
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I have seen in many places the quote: "Random graphs are good expanders". The only prof I could find to this sentence is regarding b-partite graphs, for e...
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I'm having some trouble seeing why dot products are said to give scalar values. As a far as I can see, it just gives another vector that is projected...
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