List questions from trigonometric-series

Published on 01 Jun 2016 - 5:45

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Other types of closed form for $\sum_{n=1}^\infty \frac{\cos(nx)}{n}$ in specific interval

Published on 02 Jun 2016 - 13:58

114

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Trigonometric fraction Inequality question

Published on 04 Jun 2016 - 9:23

56

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Using a Taylor polynomial to approximate $\cos(\frac14)$ with an error no more than $10^{-12}$

Published on 04 Jun 2016 - 12:13

1.9k

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How to find the sum $\cos(2x)+\cos(4x)+\cos(6x)+\cos(8x)+\ldots+\cos(2016x)$?

Published on 05 Jun 2016 - 1:32

794

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A geometric proof for the "small angle approximation" for the sine, cosine and tangent

Published on 05 Jun 2016 - 20:50

80

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Expression for $\arccos\frac2\pi$

Published on 06 Jun 2016 - 17:27

38

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Writing an operator $T$ defined by $(T f)(t) = \int_{-\pi}^\pi h(t − s)f(s)ds$ as $\sum_{n \in \mathbb Z} \mu_n \langle f, \varphi_n\rangle \varphi_n$

Published on 13 Jun 2016 - 11:46

104

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Sum of cosines with a multiplicative factor in the angle and different interval

Published on 14 Jun 2016 - 23:41

509

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Explaining a Series Expansion for the Divisor Function

Published on 20 Jun 2016 - 19:13

353

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Closed form for $\prod\limits_{l=1}^\infty \cos\frac{x}{3^l}$

Published on 24 Jun 2016 - 13:42

464

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$\cot(x)\,$ in the large $x$ limit?

Published on 18 Apr 2013 - 15:18

166

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Understanding the indices in a Fourier series

Published on 04 May 2013 - 15:03

490

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Closed form for $\sum_{n=1}^\infty\frac{\cos(\pi \log n)}{n^2}$

Published on 08 May 2013 - 16:56

2.6k

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Convergence of series of solutions to $\tan(x)=x$ and $\tan(\sqrt(x)) = x$

Published on 10 May 2013 - 17:19

List Question

A Sine and Inverse Sine integral

Other types of closed form for $\sum_{n=1}^\infty \frac{\cos(nx)}{n}$ in specific interval

Trigonometric fraction Inequality question

Using a Taylor polynomial to approximate $\cos(\frac14)$ with an error no more than $10^{-12}$

How to find the sum $\cos(2x)+\cos(4x)+\cos(6x)+\cos(8x)+\ldots+\cos(2016x)$?

A geometric proof for the "small angle approximation" for the sine, cosine and tangent

Expression for $\arccos\frac2\pi$

Writing an operator $T$ defined by $(T f)(t) = \int_{-\pi}^\pi h(t − s)f(s)ds$ as $\sum_{n \in \mathbb Z} \mu_n \langle f, \varphi_n\rangle \varphi_n$

Sum of cosines with a multiplicative factor in the angle and different interval

Explaining a Series Expansion for the Divisor Function

Closed form for $\prod\limits_{l=1}^\infty \cos\frac{x}{3^l}$

$\cot(x)\,$ in the large $x$ limit?

Understanding the indices in a Fourier series

Closed form for $\sum_{n=1}^\infty\frac{\cos(\pi \log n)}{n^2}$

Convergence of series of solutions to $\tan(x)=x$ and $\tan(\sqrt(x)) = x$

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