Question

At what angle does the stone have to be hit?

score 319 · Answer 1 · 2015-12-12 08:00:53

319

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At what angle does the stone have to be hit?

Published on 12 Dec 2015 - 8:00

score 143 · Answer 2 · 2015-12-12 19:06:39

143

Views

Can you give a closed form or an asymptotic for $\sum_{m=0}^{k-1}\cos(\frac{2\pi m n}{k \log 2})$ for $k\to\infty$?

Published on 12 Dec 2015 - 19:06

score 162 · Answer 3 · 2015-12-14 12:45:16

162

Views

Convergence or divergence of (i) $\sum_{n=1}^{\infty} \cos \frac 1n$,(ii)$\sum_{n=1}^{\infty} \cos \frac {1}{n^2}$

Published on 14 Dec 2015 - 12:45

score 7.1k · Answer 4 · 2015-12-15 05:18:02

7.1k

Views

Using Demoivre's Theorem prove that $ {\cos5 \theta} = 16{\cos^5 \theta} - 20{\cos^3 \theta} + 5{\cos \theta} $ .

Published on 15 Dec 2015 - 5:18

score 119 · Answer 5 · 2015-12-17 15:00:42

119

Views

How to find $\sum_{n=0}^\infty\sum_{k=0}^\infty\frac{(-1)^{n+k}}{(2k+1)(2n+1)^{2k+1}}$

Published on 17 Dec 2015 - 15:00

score 258 · Answer 6 · 2015-12-18 20:31:24

258

Views

Summation relating factorial and cosine

Published on 18 Dec 2015 - 20:31

score 618 · Answer 7 · 2015-12-23 13:51:07

618

Views

Sine of argument with large n approximation

Published on 23 Dec 2015 - 13:51

score 425 · Answer 8 · 2015-12-30 16:53:28

425

Views

It is possible to get a closed-form for $\sum_{n=1}^{\infty}\frac{\sin(\frac{3\pi}{n})}{n^2}$?

Published on 30 Dec 2015 - 16:53

score 88 · Answer 9 · 2016-01-03 02:16:17

88

Views

Example of an infinite sum of functions $f_n(x)$ that converges to $x$, is there a typo in my book?

Published on 03 Jan 2016 - 2:16

score 371 · Answer 10 · 2016-01-06 21:06:27

371

Views

Find $-3\vec u+4\vec v$ given $u=4\vec i + \vec j$ and $v=5 \vec i - 2\vec j$

Published on 06 Jan 2016 - 21:06

score 6k · Answer 11 · 2016-01-06 23:08:55

6k

Views

Determine the height of the tree

Published on 06 Jan 2016 - 23:08

score 129 · Answer 12 · 2016-01-10 15:43:04

129

Views

find the closed form of $\sum_{k=1}^\infty\left(\frac{\sec{kz}}{k^2}\right)^2$

Published on 10 Jan 2016 - 15:43

score 754 · Answer 13 · 2016-01-13 14:53:05

754

Views

How do you find the value of $\sum_{r=0}^{44} \tan^2(2r+1)$?

Published on 13 Jan 2016 - 14:53

score 233 · Answer 14 · 2016-01-13 16:30:29

233

Views

How do you find the sum: $\sum_{r=1}^6 \tan^2\left(\frac{r \pi}{n}\right)$

Published on 13 Jan 2016 - 16:30

score 2.3k · Answer 15 · 2016-01-20 16:44:08

2.3k

Views

MacLaurin series for $9\sec(3x)$

Published on 20 Jan 2016 - 16:44

List Question

At what angle does the stone have to be hit?

Can you give a closed form or an asymptotic for $\sum_{m=0}^{k-1}\cos(\frac{2\pi m n}{k \log 2})$ for $k\to\infty$?

Convergence or divergence of (i) $\sum_{n=1}^{\infty} \cos \frac 1n$,(ii)$\sum_{n=1}^{\infty} \cos \frac {1}{n^2}$

Using Demoivre's Theorem prove that $ {\cos5 \theta} = 16{\cos^5 \theta} - 20{\cos^3 \theta} + 5{\cos \theta} $ .

How to find $\sum_{n=0}^\infty\sum_{k=0}^\infty\frac{(-1)^{n+k}}{(2k+1)(2n+1)^{2k+1}}$

Summation relating factorial and cosine

Sine of argument with large n approximation

It is possible to get a closed-form for $\sum_{n=1}^{\infty}\frac{\sin(\frac{3\pi}{n})}{n^2}$?

Example of an infinite sum of functions $f_n(x)$ that converges to $x$, is there a typo in my book?

Find $-3\vec u+4\vec v$ given $u=4\vec i + \vec j$ and $v=5 \vec i - 2\vec j$

Determine the height of the tree

find the closed form of $\sum_{k=1}^\infty\left(\frac{\sec{kz}}{k^2}\right)^2$

How do you find the value of $\sum_{r=0}^{44} \tan^2(2r+1)$?

How do you find the sum: $\sum_{r=1}^6 \tan^2\left(\frac{r \pi}{n}\right)$

MacLaurin series for $9\sec(3x)$

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