List questions from trigonometric-series

Published on 24 Mar 2013 - 10:11

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Algebraic solution to find circle radius given distance of three external points from perimeter

Published on 27 Mar 2013 - 3:27

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Sum of tangent functions where arguments are in specific arithmetic series

Published on 30 Mar 2013 - 10:15

399

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Show the moment generating function is equal to $\cosh t$

Published on 03 Aug 2020 - 22:11

93

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Existence of a Probability Measure with given Fourier Coefficients

Published on 17 Aug 2020 - 13:18

25

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Closed form expression for $\sum_{i=1}^n a_i \cos(wt_i + \phi)$

Published on 19 Aug 2020 - 1:06

401

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Graph od periodic extension of function and its Fourier cosine series

Published on 25 Aug 2020 - 15:26

416

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distorted sine function

Published on 26 Aug 2020 - 1:43

181

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When is trigonometric series the Fourier series of some function? (related to the book "Fourier and wavelet analysis"-Bachman)

Published on 27 Aug 2020 - 14:52

112

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WolframAlpha and the sum $\sum_{k=1}^{n}\frac{\cos(\pi k)}{\csc(\pi k)}$

Published on 28 Mar 2026 - 5:22

174

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Convergence of $\sum_{n=1}^{+\infty}n\tan \left( \frac{\pi}{2^{n+1}}\right )$

Published on 25 Sep 2020 - 17:45

143

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Gauss hypergeometric series and hyperbolic functions- proof

Published on 02 Oct 2020 - 12:23

210

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Fourier cosine series on $[0,\infty)$

Published on 03 Oct 2020 - 13:27

226

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Evaluate the sum of series of arctan and find limit

Published on 11 Oct 2020 - 16:35

247

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Finding a lower bound for a fractional part

Published on 13 Oct 2020 - 1:11

List Question

finding $\lim_{n\rightarrow\infty}\sum_{r=1}^{n}\arctan\left(\frac{2r}{1-r^2+r^4}\right)$

Algebraic solution to find circle radius given distance of three external points from perimeter

Sum of tangent functions where arguments are in specific arithmetic series

Show the moment generating function is equal to $\cosh t$

Existence of a Probability Measure with given Fourier Coefficients

Closed form expression for $\sum_{i=1}^n a_i \cos(wt_i + \phi)$

Graph od periodic extension of function and its Fourier cosine series

distorted sine function

When is trigonometric series the Fourier series of some function? (related to the book "Fourier and wavelet analysis"-Bachman)

WolframAlpha and the sum $\sum_{k=1}^{n}\frac{\cos(\pi k)}{\csc(\pi k)}$

Convergence of $\sum_{n=1}^{+\infty}n\tan \left( \frac{\pi}{2^{n+1}}\right )$

Gauss hypergeometric series and hyperbolic functions- proof

Fourier cosine series on $[0,\infty)$

Evaluate the sum of series of arctan and find limit

Finding a lower bound for a fractional part

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