Mathematics
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PNDas
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All Questions Answers
Score Newest
answer
4
$\lim_{n \rightarrow \infty} \frac{2^n+(-1)^n}{2^{n+1}+(-1)^{n+1}}$
Jan 3, 2021
question
3
Grandi's series converges to 1/2, proof check
May 5, 2020
answer
3
Integral over antisymmetric function diverges
Oct 24, 2020
question
2
$f:R\to R$ has the property for $y\in R$, $\sup_{x\in R} [xy-f(x)]$ is finite. Then prove $\lim_{|x|\to\infty} \frac{f(x)}{|x|}=+\infty$
May 9, 2021
answer
2
sequence/series limits
Oct 28, 2020
answer
2
Integrating $\int_{\pi/4}^{\pi/2}\:\frac{\cos^4x}{\sqrt{1-\sin x}}dx$ and $\int_0^{2\pi}\frac{\sqrt{1-\cos x}}{\sqrt{2}} dx$
Nov 14, 2020
answer
2
Nice limit: $\lim_{x \to 0}\left(\frac{\arcsin x}{x}\right)^{\frac1{x^2}}$
Nov 14, 2020
answer
2
ODE $y'+ x\sin( 2y) = x e^{-x^2} \cos^2 (y)$
Nov 4, 2020
answer
2
Knowing the limit of function, how to caculate the limit of its integral?
Oct 22, 2020
answer
2
How to prove this using Taylor's Theorem
Nov 21, 2020

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