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D.R.

Hello reader!

Not-Yet-Professor D.R. is a young, aspiring mathemagician-extroardinaire. He enjoys hiking, blowing things up, classical music (especially piano), all things tech, and being challenged mentally (not mentally challenged, mind you).

He currently attends the University of Washington, Seattle. You will find all his work in the website in the website link, or here.

Also, a shoutout to the Crusade of Answers, the only beam of hope left for those poor, sad, unanswered and unvoted questions.

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  • Boulder, CO, United States
  • danielrui.com
  • Member for 2 years, 6 months
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  • Last seen 56 secs ago

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Top posts (105) All Questions Answers | Votes Newest

30 Manual calculation doesn't match Wolfram Alpha. Why? Jan 3 '18
15 “Continuized” Taylor Series? $\sin(x)=\sum \frac{(-1)^nx^{2n+1}}{(2n+1)!}=\int_{-1}^\infty \frac{\cos(\pi n) x^{2n+1}}{G(2n+1)}dn$? Mar 1
12 The significance and acceptance of Helfgott’s proof of the weak Goldbach Conjecture Mar 27
8 Why does combining $\int_{-\infty}^{\infty} e^{-x^2} dx\int_{-\infty}^{\infty} e^{-y^2} dy$ into a $dx\,dy$ integral work? Jan 10 '17
8 Product of Sines and Sums of Squares of Tangents Jun 26 '17
7 What is $\int_0^\infty\frac{x^{z-1}}{x+1} dx$? Feb 27 '17
7 Solve $f'(x)=f(x)^{2}+4$ Mar 4
6 If $\frac{\cos x}{\cos y}+\frac{\sin x}{\sin y}=-1$, then what's the value of $4\left(\frac{\cos^3y}{\cos x}+\frac{\sin^3y}{\sin x}\right)$? Sep 30 '18
6 How to solve this ( and general )logarithmic Equation Nov 6 '17
5 How to take square root of $x^2 + y^2 = 144$? Nov 8 '17
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