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thats what i just did.. does it do anything if i say it like that or do i have to copy and paster the full thing with the word mention and corner brackets

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This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

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## Comments

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TopNewestIntegral over space in polar coordinates

$\displaystyle\int_{2\pi}^{0} \int_{\infty}^{0} f(r,θ) \ r \ dr \ dθ$

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You meant

$\displaystyle \int_{2\pi}^0 \int_\infty^0 f(r, \theta)r \text d r \text d \theta$?

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Yes, I changed the Latex, thanks! I just put spaces between r dr dθ to avoid confusion. I get confused a lot with them. lol

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Gaussian (normal) Distribution

$\dfrac{1}{\sqrt{2\pi}\sigma} \text{e}^{\dfrac{(x-\mu)^{2}}{2 \sigma^{2}}}$

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Nth roots of unity

$z^{n} = 1 ⇒ z = e^{\dfrac{2πi}{n}}$

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Cauchy's Integral Formula

$f(a) = \dfrac{1}{2\pi i} \displaystyle\oint_{\gamma} \dfrac{f(z)}{z-a} dz$

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Fourier Transform

$f(x) = \displaystyle\int_{- \infty}^{\infty} F(k) e^{2\pi i k x} dk$

$F(k) = \displaystyle\int_{- \infty}^{\infty} f(x) e^{-2\pi i k x} dx$

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Riemann Zeta Function

$\varsigma (2n) = \displaystyle\sum_{k = 1}^{\infty} \dfrac{1}{2^{kn}} \\ \\ \ \text{ } \ \ \ \ \ \ \ \ = \dfrac{|B_{2n}|}{2(2n)!} (2 \pi)^{2n}, \text{ } n = 1,2,3,......$

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you day not to interfere with your latex testing yet you put a abyss in mine

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This isn't just testing Latex, I'm writing actual formula's here. These are all pi and tau related formulas

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title...

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@Nathan Soliman

.....has been changedLog in to reply

A good observation in these formula's is that each of them has 2*pi which is tau. So Tau simplifies these formulas @Nathan Soliman

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Nice $\tau$ formulas, @Percy Jackson!

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Thanks!

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$\large\tau \normalsize = 32 \displaystyle\lim_{n\to\infty} (n+1) \prod_{k=1}^{n} \dfrac{k^{2}}{(2k + 1)^{2}}$

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@Yajat Shamji

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Cool.

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[10420647:Percy Jackson]

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@Nathan Soliman - I put my mention ID in my Bio for other's convenience. Now you don't need to follow Ham's method, just copy my id from my Bio.

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thats what i just did.. does it do anything if i say it like that or do i have to copy and paster the full thing with the word mention and corner brackets

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LOL, I'll just act like I didn't read that :)

But good idea, I'll do that as well...

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@Frisk Dreemurr, mention[10427613:Frisk Dreemurr]

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