Mathematics
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user208259
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  • Member for 8 years, 10 months
  • Last seen more than 8 years ago
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All Questions Answers
Score Newest
answer
12
Taylor series for $\sqrt{x}$?
Jan 16, 2015
answer
8
How to prove that $\cos(\pi÷11)+\cos(3\pi÷11)+\cos(5\pi÷11)+\cos(7\pi÷11)+\cos(9\pi÷11)=0.5$?
Jan 16, 2015
answer
5
Determine whether $ \{ a + b \sqrt[3]{2} + c\sqrt[3]{4} \mid a,b,c\in\mathbb Z\}$ is an abelian group
Jan 19, 2015
answer
5
Prove that, for $x \in \mathbb R$ and $\delta_x > 0$, the open interval $(x-\delta_x, x+\delta_x)$ is itself an open set
Jan 25, 2015
answer
4
Equivalent of $\int_0^{\pi/2}\cos^n(\sin(x))dx$
Jan 29, 2015
answer
4
Prove that a statement or its negation follows from ZFC
Jan 16, 2015
answer
4
Is every compact set rectifiable? example
Jan 20, 2015
answer
4
Is there a convention regarding the capitalization of adjectives derived from proper names?
Jan 21, 2015
answer
3
Dyadic expansion
Jan 28, 2015
answer
3
Outline for high school combinatorics class?
Jan 28, 2015

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