User Naz

12 votes

4 answers

891 views

Book recommendation for masters student with no maths background

asked Nov 6, 2015 at 18:36

9 votes

3 answers

2k views

Absolute value graph sketching: $||x-1|-1|$

asked Apr 29, 2016 at 18:45

8 votes

2 answers

868 views

Generalizing the Leibniz rule

asked Feb 4, 2016 at 19:34

8 votes

3 answers

378 views

Series of squares of n integers - where is the mistake?

asked Mar 19, 2016 at 22:27

6 votes

4 answers

476 views

Relation between signs of imaginary parts of $(x+iy)$ and $\sqrt{x+iy}$

asked Sep 5, 2016 at 18:21

6 votes

3 answers

897 views

$\mathbb{R}$ is uncountable, Abbott's proof

asked Sep 18, 2016 at 15:15

6 votes

3 answers

202 views

Can someone help me finish this: evaluate $S_n = \frac{x}{1-x^2}+\frac{x^2}{1-x^4}+ ... + \frac{x^{2^{n-1}}}{1-x^{2^{n}}}$ [duplicate]

asked Oct 6, 2018 at 14:04

5 votes

4 answers

10k views

Transpose of a projection matrix

asked Jun 7, 2016 at 10:04

5 votes

3 answers

550 views

Alternative area of a triangle formula

asked Aug 12, 2015 at 15:17

4 votes

1 answer

324 views

Standard Wiener process continuity

asked Apr 9, 2016 at 14:14

4 votes

1 answer

1k views

Moore-Penrose pseudoinverse solution of a system of linear equations

asked May 29, 2018 at 14:48

4 votes

1 answer

462 views

Holder Inequality proof dead end

asked Mar 11, 2017 at 14:41

4 votes

3 answers

268 views

Negation of a statement about polynomials

asked Jun 8, 2022 at 22:06

3 votes

0 answers

453 views

Backpropagation - softmax derivative

asked Jun 11, 2018 at 12:35

3 votes

2 answers

1k views

Limit of $\sin(\pi \sqrt{4n^2+n})$

asked Oct 12, 2018 at 20:28

3 votes

2 answers

58 views

Find $c$ and $n$ such that $\frac{x^3 \arctan x}{x^4 + \cos x +3} \sim cx^n$ as $x \to 0$

asked Oct 17, 2018 at 10:51

3 votes

1 answer

453 views

What is a characterisation function

asked May 13, 2017 at 10:08

3 votes

0 answers

98 views

How can an Ornstein-Uhlenbeck process be shown to be continuous/diffusion?

asked May 2, 2016 at 10:44

3 votes

2 answers

108 views

How should I understand $\displaystyle\sum_k f(k) \approx \int dk \ f(k)$?

asked May 28, 2016 at 15:24

3 votes

2 answers

241 views

Functions of random variables explanation

asked Jan 1, 2016 at 14:37

3 votes

1 answer

337 views

General equation for the change of variable (random variables' functions)

asked Jan 2, 2016 at 10:12

3 votes

1 answer

1k views

The sum of integers in each row / column / major diagonal of a Magic Square of order $N$ is $\dfrac{N(N^2+1)}{2}$

asked Sep 6, 2015 at 17:26

3 votes

2 answers

211 views

Mathematics Olympiad Question $a+b+c=7$, ...

asked Nov 23, 2015 at 15:17

3 votes

2 answers

2k views

3 balls into 3 cells problem

asked Dec 31, 2015 at 18:09

2 votes

2 answers

70 views

Event independence

asked Dec 31, 2015 at 11:56

2 votes

2 answers

112 views

Sum of binomial coefficients $\sum_{n=0}^6 \binom{6}{n} = 2^6$

asked Dec 30, 2015 at 14:54

2 votes

5 answers

151 views

Solve $y^3-3y-\sqrt{2}=0$ using trigonometry

asked Dec 6, 2015 at 16:15

2 votes

2 answers

70 views

Spotting substitution in $\int \frac{1}{(t+\cos \alpha)^2 + \sin^2 \alpha}$

asked Nov 29, 2015 at 12:31

2 votes

4 answers

373 views

Nature of the roots of quadratic equation

asked Jul 19, 2015 at 11:54

2 votes

2 answers

2k views

Angle between two straight lines (tangent formula)

asked Sep 14, 2015 at 19:32

Stack Exchange Network

257 Questions

Book recommendation for masters student with no maths background

Absolute value graph sketching: $||x-1|-1|$

Generalizing the Leibniz rule

Series of squares of n integers - where is the mistake?

Relation between signs of imaginary parts of $(x+iy)$ and $\sqrt{x+iy}$

$\mathbb{R}$ is uncountable, Abbott's proof

Can someone help me finish this: evaluate $S_n = \frac{x}{1-x^2}+\frac{x^2}{1-x^4}+ ... + \frac{x^{2^{n-1}}}{1-x^{2^{n}}}$ [duplicate]

Transpose of a projection matrix

Alternative area of a triangle formula

Standard Wiener process continuity

Moore-Penrose pseudoinverse solution of a system of linear equations

Holder Inequality proof dead end

Negation of a statement about polynomials

Backpropagation - softmax derivative

Limit of $\sin(\pi \sqrt{4n^2+n})$

Find $c$ and $n$ such that $\frac{x^3 \arctan x}{x^4 + \cos x +3} \sim cx^n$ as $x \to 0$

What is a characterisation function

How can an Ornstein-Uhlenbeck process be shown to be continuous/diffusion?

How should I understand $\displaystyle\sum_k f(k) \approx \int dk \ f(k)$?

Functions of random variables explanation

General equation for the change of variable (random variables' functions)

The sum of integers in each row / column / major diagonal of a Magic Square of order $N$ is $\dfrac{N(N^2+1)}{2}$

Mathematics Olympiad Question $a+b+c=7$, ...

3 balls into 3 cells problem

Event independence

Sum of binomial coefficients $\sum_{n=0}^6 \binom{6}{n} = 2^6$

Solve $y^3-3y-\sqrt{2}=0$ using trigonometry

Spotting substitution in $\int \frac{1}{(t+\cos \alpha)^2 + \sin^2 \alpha}$

Nature of the roots of quadratic equation

Angle between two straight lines (tangent formula)