User ALEXANDER

2

8

votes

3

answers

1k

views

How to integrate $\int \sec ^m(x) \tan ^n(x) \, dx$

Nov 30 '19 at 21:04 Travis Willse 78.7k

2

7

votes

3

answers

440

views

Constructing a certain rational number (Rudin)

real-analysis

Jan 4 '17 at 18:50 zhw. 95.9k

2

5

votes

5

answers

141

views

Linear Matrix Least Squares with Linear Equality Constraint - Minimize $ {\left\| A - B \right\|}_{F}^{2} $ Subject to $ B x = v $

optimization convex-optimization lagrange-multiplier quadratic-programming

Apr 20 '20 at 19:09 Royi 6,611

1

5

votes

2

answers

8k

views

Using mean value theorem to show that $\cos (x)>1-x^2/2$

real-analysis inequality

Jan 2 '19 at 17:57 amWhy 200k

1

5

votes

1

answer

1k

views

Chapman - Kolmogorov equation explained

probability-theory markov-process

Jan 10 '17 at 13:14 Cettt 2,300

5

votes

4

answers

929

views

$\sum _{n=1}^{\infty } \frac{1}{n (n+1) (n+2)}$ Understand the representation

calculus sequences-and-series

Jan 19 '15 at 14:02 Martin Sleziak 52.2k

1

5

votes

2

answers

1k

views

Integration of high order fraction; explanation of method.

calculus

Dec 20 '14 at 21:25 Ian 84.8k

4

votes

4

answers

315

views

Basic understanding of Log and $2 \log _3(x)+\log _9(x)=10$

algebra-precalculus

Aug 20 '14 at 22:06 Paul Sundheim 2,530

3

votes

4

answers

6k

views

Proof of Theorem: The principle of mathematical induction

proof-explanation

Dec 24 '18 at 8:39 K.M 2,150

3

votes

2

answers

90

views

Find $\iint \frac{1}{\sqrt{x^2+y^2}}\;\mathrm{d}y\;\mathrm{d}x$

calculus

Jun 3 '18 at 4:25 Ewin 1,708

3

votes

2

answers

103

views

Question regarding the derivation of textbook example sum of $k^2$

calculus

Jan 21 '16 at 11:40 user118494 5,371

3

votes

4

answers

127

views

Simple differential equation( introduction but need some basic explanation)

calculus ordinary-differential-equations

Jul 30 '15 at 20:00 Matematleta 24.7k

3

votes

1

answer

354

views

Limit of multivariable functions Do not understand solution.

calculus

May 12 '15 at 14:30 KittyL 15.9k

3

votes

3

answers

95

views

Find $\log (2-x)$ in powers of x

calculus

Mar 27 '15 at 15:02 zermelovac 903

3

votes

5

answers

122

views

Evaluating $\sum _{n=2}^{\infty } \frac{(-5)^n}{8^{2 n}}$ making use of geometric series

calculus

Jan 16 '15 at 22:46 amWhy 200k

1

3

votes

2

answers

611

views

$\tan \left(\sec ^{-1}(x)\right)$

calculus trigonometry

Sep 14 '14 at 11:36 rae306 9,017

1

3

votes

5

answers

99

views

Integrate $\int \left(A x^2+B x+c\right) \, dx$

calculus ordinary-differential-equations

Aug 15 '14 at 15:12 Petite Etincelle 13.9k

2

votes

0

answers

1k

views

Homogenous Linear ODE from standard to normal form. Justification.

calculus ordinary-differential-equations

Feb 4 '19 at 13:50 jeea 1,278

2

votes

1

answer

90

views

The exterior measure

real-analysis measure-theory

Aug 1 '18 at 5:18 ALEXANDER 1,837

2

votes

1

answer

110

views

Following a derivation using Ito's lemma

stochastic-calculus

Mar 23 '16 at 12:53 Marcel 829

2

votes

0

answers

91

views

The domain of the sum rule(probability: The logic of science)

probability-theory

Aug 18 '15 at 11:09 ALEXANDER 1,837

2

votes

1

answer

58

views

Probability, understanding part from textbook(impossible)

probability

Aug 16 '15 at 10:11 Community♦ 1

2

votes

0

answers

93

views

Use of a known solution to find another ODE Book explanation

calculus

Aug 12 '15 at 11:28 ALEXANDER 1,837

2

votes

1

answer

510

views

Show that $1$ and $-1$ are the only divisors of $1$

elementary-number-theory logic

Jul 17 '15 at 12:22 Bruno Bentzen 3,212

2

votes

4

answers

82

views

The constant of integration in the solution to the differential equation $-4 g(x)=2 x g'(x)$

calculus ordinary-differential-equations

May 20 '15 at 22:54 Cameron Buie 96k

2

votes

1

answer

233

views

Intersection of two dimensional lines in 3d and create a plane with conditions.

calculus linear-algebra

May 4 '15 at 4:57 Alexey Burdin 5,112

2

votes

2

answers

51

views

Power series, part of proof explanation.

calculus real-analysis algebra-precalculus binomial-theorem

Mar 15 '15 at 9:03 ALEXANDER 1,837

2

votes

1

answer

152

views

Elasticity of demand the idea behind it.

calculus economics

Nov 3 '14 at 3:17 GFauxPas 4,815

1

2

votes

2

answers

88

views

$\cos ^2(x)=\frac{1}{2} \cos (2 x)+\frac{1}{2}$

algebra-precalculus

Oct 25 '14 at 2:27 K Y Liu 1

2

votes

2

answers

2k

views

Simplify $\sinh (\log (x))$

calculus logarithms hyperbolic-functions

Sep 15 '14 at 12:38 Martin Sleziak 52.2k

Stack Exchange Network

current community

your communities

more stack exchange communities

Next privilege

Next badge

149 Questions

How to integrate $\int \sec ^m(x) \tan ^n(x) \, dx$

Constructing a certain rational number (Rudin)

Linear Matrix Least Squares with Linear Equality Constraint - Minimize $ {\left\| A - B \right\|}_{F}^{2} $ Subject to $ B x = v $

Using mean value theorem to show that $\cos (x)>1-x^2/2$

Chapman - Kolmogorov equation explained

$\sum _{n=1}^{\infty } \frac{1}{n (n+1) (n+2)}$ Understand the representation

Integration of high order fraction; explanation of method.

Basic understanding of Log and $2 \log _3(x)+\log _9(x)=10$

Proof of Theorem: The principle of mathematical induction

Find $\iint \frac{1}{\sqrt{x^2+y^2}}\;\mathrm{d}y\;\mathrm{d}x$

Question regarding the derivation of textbook example sum of $k^2$

Simple differential equation( introduction but need some basic explanation)

Limit of multivariable functions Do not understand solution.

Find $\log (2-x)$ in powers of x

Evaluating $\sum _{n=2}^{\infty } \frac{(-5)^n}{8^{2 n}}$ making use of geometric series

$\tan \left(\sec ^{-1}(x)\right)$

Integrate $\int \left(A x^2+B x+c\right) \, dx$

Homogenous Linear ODE from standard to normal form. Justification.

The exterior measure

Following a derivation using Ito's lemma

The domain of the sum rule(probability: The logic of science)

Probability, understanding part from textbook(impossible)

Use of a known solution to find another ODE Book explanation

Show that $1$ and $-1$ are the only divisors of $1$

The constant of integration in the solution to the differential equation $-4 g(x)=2 x g'(x)$

Intersection of two dimensional lines in 3d and create a plane with conditions.

Power series, part of proof explanation.

Elasticity of demand the idea behind it.

$\cos ^2(x)=\frac{1}{2} \cos (2 x)+\frac{1}{2}$

Simplify $\sinh (\log (x))$