Mathematics
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rudgns55
  • Member for 8 years, 11 months
  • Last seen more than 1 year ago
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View all questions and answers
All Questions Answers
Score Newest
answer
14
The range of $T^*$ is the orthogonal complement of $\ker(T)$
May 30, 2016
question
6
$\sum_{n=0}^{\infty} \sum_{k=0}^{\infty} \frac{n}{(k+n)!} \frac{n}{k!}$
Aug 9, 2018
answer
6
Prove $\sqrt{a_{1}a_{n}}\leq\sqrt[n]{a_{1}a_{2}\cdot...\cdot a_{n}}$
Jan 5, 2021
answer
5
maximum and minimum value of $(a+b)(b+c)(c+d)(d+e)(e+a).$
Feb 4, 2021
question
4
Does $\lim_{x\to\infty} f(x+1)/f(x) = 1$ imply $\lim_{x\to\infty} f(f(x+1))/f(f(x)) = 1$?
Mar 28, 2022
answer
4
Curvature of geodesic circles on surface with constant curvature
Dec 14, 2014
answer
4
Solve $x^3+2x+1=2^n$ over positive integers?
Feb 3, 2021
question
3
Finding the maximum value of $\sum_{cyc}\frac{1}{a^2-4a+9}$ s.t. $a+b+c =1$
Aug 31, 2020
question
1
Uniform convergence of $\sum_{k=1}^{\infty} \frac{1}{k}\arctan(\frac{x}{k})$ on $\mathbb{R}$
Dec 10, 2019
answer
1
Direct-sum decomposition of dual space
May 26, 2016

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