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visits member for 1 year, 11 months
seen Jan 28 at 17:59

Jul
2
awarded  Curious
May
16
awarded  Nice Question
Nov
30
accepted Prove $(1-\epsilon )\cdots(1-\epsilon ^{n-1})=n $ where $\epsilon = \exp(\frac{2\pi i}{n}), n\in \mathbb{N}, n \neq {0,1}$
Nov
30
asked Prove $(1-\epsilon )\cdots(1-\epsilon ^{n-1})=n $ where $\epsilon = \exp(\frac{2\pi i}{n}), n\in \mathbb{N}, n \neq {0,1}$
Oct
25
awarded  Yearling
Jun
11
accepted Limit calculation using Riemann integral
Jun
9
awarded  Teacher
Jun
9
comment Limit calculation using Riemann integral
Integration is easy, everyone can do it on his own, I hope it is now correct :)
Jun
9
answered Limit calculation using Riemann integral
Jun
9
comment Limit calculation using Riemann integral
aaa.... so the answer is just the sum of two integrals?
Jun
9
asked Limit calculation using Riemann integral
May
21
accepted Calculate the length of curve $f(x)=\arcsin(e^x)$, check solution, please.
May
21
comment Calculate the length of curve $f(x)=\arcsin(e^x)$, check solution, please.
And the result will be in terms of summation, doesn't it?
May
21
comment Calculate the length of curve $f(x)=\arcsin(e^x)$, check solution, please.
However the integral is still nasty, is this correct way to do it?
May
21
comment Calculate the length of curve $f(x)=\arcsin(e^x)$, check solution, please.
$\frac{1}{\sqrt{1-x^2}}$...
May
21
asked Calculate the length of curve $f(x)=\arcsin(e^x)$, check solution, please.
Apr
25
comment Functions $f, g$ are given. We know that we can expand them into power series around $x_0=0$, they also satisfy: $f(\frac{1}{k})=g(\frac{1}{k})$ …
ee... a contradiction of what? You mean such a function that the statement is not true?
Apr
25
asked Functions $f, g$ are given. We know that we can expand them into power series around $x_0=0$, they also satisfy: $f(\frac{1}{k})=g(\frac{1}{k})$ …
Apr
24
answered Power Series Proof w/ Binomial Coef.
Apr
23
accepted expand $ \arctan\left(\frac{3x+2}{3x-2}\right)$ into pwer series, find radius of convergence (check solution)