Mathematics
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user3472
  • Member for 1 year, 3 months
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All Questions Answers
Score Newest
question
9
Determinant of matrix with $2$'s and the pattern $3\ 1\ 3$
Nov 8, 2021
question
8
recurrence involving permutations
Dec 1, 2021
question
7
compute the integral $\int_0^1 \int_0^1 \int_0^1 \frac{1}{(1+x^2+y^2+z^2)^2} dxdydz$ [duplicate]
Oct 20, 2021
question
7
prove that $\int_0^\infty \frac{\sin^2 x-x\sin x}{x^3} \, dx= \frac{1}{2} - \ln 2$
Nov 14, 2021
question
6
there are infinitely many numbers $n$ so that $2^n$ ends in $n$
Nov 25, 2021
question
6
Prove that $\frac{1}{a_1} + \cdots + \frac{1}{a_n} = 1$ implies $a_n < 2^{n!}$ [duplicate]
Apr 9
question
4
Prove (or disprove) an inequality involving three vectors in $\mathbb{R}^n$ [duplicate]
Apr 30
question
4
find the probability both planes can park at a gate
May 11
question
3
prove or disprove: for every function $f : \mathbb{N}\to \mathbb{N}, 0\leq f(n) \leq n,$ the graph of $f$ has an infinite set of collinear points
Apr 28
question
3
number of permutations maximizing a sum
May 7

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