User Rax Adaam

10 votes

1 answer

3k views

proving the determinant of a product of matrices is the product of their determinants in suffix / index notation

asked Mar 7, 2018 at 21:26

8 votes

1 answer

2k views

Why is this vector field not conservative, even though it has a potential? (what is the actual definition of a conservative vector field?)

asked Oct 20, 2017 at 15:17

6 votes

1 answer

809 views

8 Vs 10 Axioms / Properties of a Vector Space: Should Closure of Addition and Scalar Multiplication Be Included?

asked Mar 15, 2020 at 21:04

5 votes

2 answers

809 views

Determining the domain of a polynomial with rational exponents

asked Dec 5, 2018 at 6:23

4 votes

2 answers

160 views

$\int_0^1 \int_0^{1-y} \cos\Big( \frac{x-y}{x+y} \Big) \, dx dy$ [duplicate]

asked Jan 25, 2018 at 21:35

4 votes

2 answers

112 views

Handling a sequence in a series: $\sum_{n=1}^{\infty} \frac{(a_n)^n \cos(n\pi)}{n}$ for $a_n \rightarrow \tfrac{1}{2}$

asked Sep 28, 2014 at 17:13

3 votes

1 answer

861 views

Higher order partial derivatives of implicit function?

asked Dec 13, 2016 at 22:39

3 votes

1 answer

220 views

What Motivated the Definition of the Orthogonality of Functions?

asked Nov 8, 2017 at 16:26

3 votes

2 answers

675 views

"go / goes to" $(x \to y)$ vs. "maps to" $(x \mapsto y)$

asked Jun 16, 2019 at 17:40

3 votes

1 answer

140 views

In the notation $T\colon\mathbb{R}^{n} \to \mathbb{R}^m$, does $\mathbb{R}^m$ refer to the codomain or the image of $T$?

asked Nov 11, 2020 at 1:36

3 votes

3 answers

153 views

Notation for fields and the elements of the sets used to define them.

asked Nov 15, 2020 at 19:52

3 votes

2 answers

526 views

Notation for maps: is "$A$" in "$\alpha : A \to B$" always the domain?

asked Dec 13, 2020 at 22:17

2 votes

0 answers

267 views

Intuitive understanding of Taylor's Inequality (Lagrange's remainder)

asked Jun 19, 2019 at 20:22

2 votes

2 answers

69 views

Equivalent forms for $\int \csc(x) dx$

asked Sep 30, 2020 at 20:59

2 votes

1 answer

103 views

Correct algorithm for finding regions of increasing / decreasing and the relationship to critical points.

asked Apr 21, 2019 at 0:02

2 votes

1 answer

2k views

Why Does the Characteristic Equation of a Differential Equation Depend on the Solution?

asked Apr 19, 2018 at 19:18

2 votes

1 answer

42 views

is it possible to have $u(1,t) = 10$ and $u(x,0) = x^2$ for $x \in [0,1]$? (heat equation)

asked Apr 22, 2018 at 22:06

2 votes

1 answer

824 views

Why is a semiannular region not simply connected?

asked Oct 29, 2017 at 0:38

1 vote

1 answer

44 views

How to find the sum of $\sum_{n=1}^{\infty} (-1)^{n-1} \frac{3^n}{n5^n}$?

asked Sep 28, 2014 at 13:57

1 vote

0 answers

102 views

Understanding (Implicit) Partial Derivatives

asked Nov 21, 2017 at 15:13

1 vote

1 answer

174 views

Volume of revolution with coordinate transformation.

asked Jan 25, 2018 at 18:48

1 vote

0 answers

141 views

Applying boundary conditions for differential operator to show operator is hermitian.

asked Jun 1, 2017 at 21:10

1 vote

1 answer

98 views

Solving inexact DE with multivariable integrating factor provided.

asked Feb 7, 2016 at 6:16

1 vote

1 answer

55 views

Why does the domain affect whether or not a vector field is conservative?

asked Feb 18, 2016 at 17:09

1 vote

3 answers

131 views

understanding when "order" is implied by the multiplication principle

asked Nov 21, 2018 at 21:51

1 vote

1 answer

131 views

Combinations vs. permutations: knowing when and how to account for order Part 2

asked Nov 21, 2018 at 23:05

1 vote

0 answers

43 views

Do we distinguish between row and column vectors when speaking of $\mathbb{R}^n$?

asked Nov 4, 2019 at 22:35

1 vote

4 answers

143 views

Efficient method for minimizing $f = x^4 + 2y^4 + 3z^4$ over the unit sphere.

asked Dec 5, 2019 at 21:29

1 vote

0 answers

53 views

Extending the Binomial Series of $(a+x)^{k}$ to Cases Where $a<0$ Via Substitution

asked Jun 20, 2019 at 22:19

1 vote

0 answers

39 views

How to refer to an interval when it is not (yet) known whether it is open or closed? (Notation for intervals)

asked Jul 5, 2019 at 17:59

Stack Exchange Network

45 Questions

proving the determinant of a product of matrices is the product of their determinants in suffix / index notation

Why is this vector field not conservative, even though it has a potential? (what is the actual definition of a conservative vector field?)

8 Vs 10 Axioms / Properties of a Vector Space: Should Closure of Addition and Scalar Multiplication Be Included?

Determining the domain of a polynomial with rational exponents

$\int_0^1 \int_0^{1-y} \cos\Big( \frac{x-y}{x+y} \Big) \, dx dy$ [duplicate]

Handling a sequence in a series: $\sum_{n=1}^{\infty} \frac{(a_n)^n \cos(n\pi)}{n}$ for $a_n \rightarrow \tfrac{1}{2}$

Higher order partial derivatives of implicit function?

What Motivated the Definition of the Orthogonality of Functions?

"go / goes to" $(x \to y)$ vs. "maps to" $(x \mapsto y)$

In the notation $T\colon\mathbb{R}^{n} \to \mathbb{R}^m$, does $\mathbb{R}^m$ refer to the codomain or the image of $T$?

Notation for fields and the elements of the sets used to define them.

Notation for maps: is "$A$" in "$\alpha : A \to B$" always the domain?

Intuitive understanding of Taylor's Inequality (Lagrange's remainder)

Equivalent forms for $\int \csc(x) dx$

Correct algorithm for finding regions of increasing / decreasing and the relationship to critical points.

Why Does the Characteristic Equation of a Differential Equation Depend on the Solution?

is it possible to have $u(1,t) = 10$ and $u(x,0) = x^2$ for $x \in [0,1]$? (heat equation)

Why is a semiannular region not simply connected?

How to find the sum of $\sum_{n=1}^{\infty} (-1)^{n-1} \frac{3^n}{n5^n}$?

Understanding (Implicit) Partial Derivatives

Volume of revolution with coordinate transformation.

Applying boundary conditions for differential operator to show operator is hermitian.

Solving inexact DE with multivariable integrating factor provided.

Why does the domain affect whether or not a vector field is conservative?

understanding when "order" is implied by the multiplication principle

Combinations vs. permutations: knowing when and how to account for order Part 2

Do we distinguish between row and column vectors when speaking of $\mathbb{R}^n$?

Efficient method for minimizing $f = x^4 + 2y^4 + 3z^4$ over the unit sphere.

Extending the Binomial Series of $(a+x)^{k}$ to Cases Where $a<0$ Via Substitution

How to refer to an interval when it is not (yet) known whether it is open or closed? (Notation for intervals)