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Mar
30
revised Simplifying $\sqrt{5+2\sqrt{5+2\sqrt{5+2\sqrt {5 +\cdots}}}}$
deleted 137 characters in body; edited title
Mar
30
revised $\lim_{n \rightarrow \infty}x_n= (-1)^nn$
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Mar
30
revised $a_{n}=\sqrt[n+1]{(n+1)!}-\sqrt[n]{n!} \implies a_{n}>a_{n+1}$
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Mar
30
awarded  Tumbleweed
Mar
28
revised Solving $\sqrt{x}-2\sqrt[4]{x}-8 = 0$
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Mar
28
revised Showing that $\lim_{n\to\infty}\sum^n_{k=1}\frac{1}{k}-\ln(n)=0.5772\ldots$
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Mar
27
revised Evaluating $\int_0^{\infty } \frac{x^{\alpha}}{\left(A+x^3\right) \left(B+e^x\right)} \, \mathrm dx \quad \alpha = \frac{9}{2},3,\cdots $
added 16 characters in body; edited title
Mar
27
revised Sequence diverges $\iff$ limit inferior diverges
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Mar
27
revised $\sin n>0$, $a_n=1/n \, ,\sin n<0$, $a_n=-1/n \, , \sum_{n=1}^{\infty} a_n$ converge?
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Mar
27
revised Simplifying $\frac{4}{2x-7}-\frac{3}{(2x-7)^2}$
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Mar
27
revised $\int_{-\infty}^{\infty} e^{tx} \frac{1}{\pi(1+x^2)} \mathrm dx$
added 8 characters in body; edited title
Mar
27
revised Integral inequality: $\dfrac{1}{30}<\int_{2}^{\infty}\dfrac{\sqrt{s^3-s^2+3}}{s^5+s^2+1}ds<\dfrac{\sqrt{2}}{20}$
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Mar
27
revised $\sum_{x=0}^{\infty}\frac{(r+x+m-1)!}{(r+m-1)!x!}(1-p)^{x}$
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Mar
27
revised Prove ${a^2+ac-c^2=b^2+bd-d^2}$ and $a > b > c > d \implies ab + cd$ is not prime
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Mar
26
revised References in English about Dirichlet's condition, $\Delta$ and $\nabla$
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Mar
26
revised $\lim_{n \rightarrow \infty} \sqrt{1+\left(\frac1{2n}\right)^n}$
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Mar
26
revised Evaluate $\sum_{n=1}^{\infty}\frac{1}{n^3+3 n^2+2 n}$
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Mar
26
revised Evaluate $\sum_{n=1}^{\infty}\frac{1}{n^3+3 n^2+2 n}$
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Mar
26
revised Find $\sum_{i=1}^\infty\left(\frac 1 {i^2}\sum_{j=1}^if(j,i)\right)$.
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Mar
25
revised $\int \sin(ax) \,\mathrm d x$
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