User hlapointe

76 votes

19 answers

22k views

Proof of the hockey stick/Zhu Shijie identity $\sum\limits_{t=0}^n \binom tk = \binom{n+1}{k+1}$

asked Oct 21, 2015 at 14:46

4 votes

3 answers

700 views

Determine the convergence of a recursive sequence

asked Oct 20, 2015 at 0:04

4 votes

2 answers

250 views

Volume of the solid intersecting 3 spheres

asked Nov 23, 2015 at 19:17

4 votes

2 answers

8k views

Evaluate the line integral of a parabola

asked Mar 16, 2016 at 19:17

3 votes

2 answers

55 views

Alice, Beatrice and a tournament

asked Feb 1, 2016 at 23:42

3 votes

4 answers

202 views

Proving divergence by using comparison test

asked Oct 26, 2015 at 20:16

2 votes

2 answers

3k views

Convert integral to a series

asked Nov 22, 2015 at 18:40

2 votes

2 answers

64 views

Proving convergence by the ratio test.

asked Oct 28, 2015 at 21:07

2 votes

1 answer

479 views

Does this alternating series converge?

asked Oct 29, 2015 at 0:17

2 votes

2 answers

64 views

Proving the convergence of $\sum \frac{(n!)^n}{n^{4n}}$

asked Oct 29, 2015 at 19:35

2 votes

2 answers

228 views

Proving convergence by the comparison test

asked Oct 25, 2015 at 22:20

2 votes

3 answers

198 views

Prove this combinatorial identity

asked Jun 30, 2014 at 20:30

2 votes

2 answers

257 views

Calculate the limit of a function of two variables

asked Oct 19, 2015 at 15:11

2 votes

1 answer

43 views

What are the probability that the first two rows of the class are full?

asked Jul 25, 2014 at 17:31

2 votes

1 answer

32 views

Demonstrate by induction

asked Jan 16, 2015 at 19:53

2 votes

0 answers

40 views

A game with $n+1$ players and a price $\textbf{B}$

asked Apr 17, 2016 at 17:21

1 vote

1 answer

8k views

Streamlines, streaklines, and pathlines

asked Mar 31, 2016 at 15:39

1 vote

2 answers

401 views

Cauchy-Euler ODE [closed]

asked Apr 22, 2016 at 0:04

1 vote

1 answer

1k views

The volume of a Torus

asked Apr 27, 2016 at 21:04

1 vote

0 answers

85 views

A specifc solution to Cauchy-Euler differential equation

asked Apr 27, 2016 at 21:57

1 vote

1 answer

2k views

Evaluate $\int_{-3}^{3} \int_{0}^{\sqrt{9-x^2}} \sin(x^2+y^2) \, dy \, dx$

asked Nov 27, 2015 at 1:05

1 vote

2 answers

56 views

How to use the properties of the logarithmic function

asked Dec 19, 2015 at 4:31

1 vote

0 answers

28 views

Check the result

asked Feb 26, 2016 at 1:05

1 vote

4 answers

578 views

Demonstration of the inequality of Cauchy-Schwarz

asked Jan 21, 2015 at 22:12

1 vote

1 answer

35 views

Demonstration of $\mathring{E}=(\mathbb{R}\setminus{\partial{E}})$ such that $E\subset{\mathbb{R}}$

asked Feb 22, 2015 at 0:51

1 vote

2 answers

51 views

Simple summation

asked Jul 8, 2015 at 21:48

1 vote

2 answers

57 views

$int(E)=\bar{E}\setminus\partial{E}$ [homework] [closed]

asked Sep 26, 2015 at 18:43

1 vote

1 answer

82 views

Will I will be able to sit and watch the movie?

asked Jul 25, 2014 at 18:12

1 vote

0 answers

69 views

Properties of relations on Z

asked Jul 27, 2014 at 21:44

1 vote

2 answers

98 views

There're no $x \in \mathbb{Q}$ which verifies $x^2=12$.

asked Jan 16, 2015 at 18:32

Stack Exchange Network

53 Questions

Proof of the hockey stick/Zhu Shijie identity $\sum\limits_{t=0}^n \binom tk = \binom{n+1}{k+1}$

Determine the convergence of a recursive sequence

Volume of the solid intersecting 3 spheres

Evaluate the line integral of a parabola

Alice, Beatrice and a tournament

Proving divergence by using comparison test

Convert integral to a series

Proving convergence by the ratio test.

Does this alternating series converge?

Proving the convergence of $\sum \frac{(n!)^n}{n^{4n}}$

Proving convergence by the comparison test

Prove this combinatorial identity

Calculate the limit of a function of two variables

What are the probability that the first two rows of the class are full?

Demonstrate by induction

A game with $n+1$ players and a price $\textbf{B}$

Streamlines, streaklines, and pathlines

Cauchy-Euler ODE [closed]

The volume of a Torus

A specifc solution to Cauchy-Euler differential equation

Evaluate $\int_{-3}^{3} \int_{0}^{\sqrt{9-x^2}} \sin(x^2+y^2) \, dy \, dx$

How to use the properties of the logarithmic function

Check the result

Demonstration of the inequality of Cauchy-Schwarz

Demonstration of $\mathring{E}=(\mathbb{R}\setminus{\partial{E}})$ such that $E\subset{\mathbb{R}}$

Simple summation

$int(E)=\bar{E}\setminus\partial{E}$ [homework] [closed]

Will I will be able to sit and watch the movie?

Properties of relations on Z

There're no $x \in \mathbb{Q}$ which verifies $x^2=12$.