Mathematics
Sosxx Fordt's user avatar
Sosxx Fordt's user avatar
Sosxx Fordt's user avatar
Sosxx Fordt
  • Member for 1 year, 1 month
  • Last seen more than a month ago
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question
2
How to show $\sum\limits_{k\ge 1} \ln\left(\frac{k^2+k+1}{k^2+k-1}\right)=\ln\left(\cosh(\frac{\sqrt3}2\pi)\right)-\ln(\sin(\frac{\sqrt5-1}2\pi))$
Nov 4, 2022
question
2
How to compute $\lim\limits_{h\to0^+}{h\sum_{n=1}^\infty\operatorname{\mathit{f}}(nh)}$ as an improper integral
Nov 16, 2022
question
1
If $a\in \mathbb C^*$, i need a relationship between $\int_{\mathbb C} f(az)dz$ and $\int_{\mathbb C} f(z)dz$
Nov 3, 2022
question
1
Let A ∈ B(H) be self-adjoint and $f$ is a positive continuous function on $\sigma(A)$, Show $f(A)$ is a positive operator
Nov 11, 2022
question
1
Snail on an extensible mat:
Apr 28

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