List questions from trigonometric-series | MathQA

Proving some trigonometric series are convergent

Published on 23 Dec 2022 - 16:51

$\int_0^\pi t^2\sin(t)\sin(n(\sin(t)-t\cos(t)))dt$ for alternate Goat problem Fourier sine series solution

Published on 30 Mar 2026 - 2:07

Counting roots of oscillatory functions

Published on 26 Dec 2022 - 2:46

Can I use an identity to go from $\sin(2\pi(\omega(t + h) + \beta))\sin(2\pi(\omega t + \beta))$ to $\frac{1}{2}\cos(2\pi \omega h)$?

Published on 06 Jan 2023 - 10:45

Are good kernels trigonometric polynomials?

Published on 07 Jan 2023 - 4:15

If $\sum_{i=1} ^{2022}\sin^{-1}(x_i) = 1011\pi$, then find $\sum_{i=1}^{2022} x_i$

Published on 16 Jan 2023 - 16:47