Rax Adaam
  • Member for 7 years, 3 months
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1 answers
9 votes
2k views
3 bookmarks
proving the determinant of a product of matrices is the product of their determinants in suffix / index notation
1 answers
8 votes
1k views
4 bookmarks
Why is this vector field not conservative, even though it has a potential? (what is the actual definition of a conservative vector field?)
1 answers
5 votes
444 views
8 Vs 10 Axioms / Properties of a Vector Space: Should Closure of Addition and Scalar Multiplication Be Included?
2 answers
5 votes
522 views
1 bookmarks
Determining the domain of a polynomial with rational exponents
2 answers
4 votes
144 views
$\int_0^1 \int_0^{1-y} \cos\Big( \frac{x-y}{x+y} \Big) \, dx dy$
2 answers
4 votes
106 views
2 bookmarks
Handling a sequence in a series: $\sum_{n=1}^{\infty} \frac{(a_n)^n \cos(n\pi)}{n}$ for $a_n \rightarrow \tfrac{1}{2}$
2 answers
3 votes
239 views
Notation for maps: is "$A$" in "$\alpha : A \to B$" always the domain?
3 answers
3 votes
57 views
1 bookmarks
Notation for fields and the elements of the sets used to define them.
1 answers
3 votes
103 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 $T$?
2 answers
3 votes
218 views
"go / goes to" $(x \to y)$ vs. "maps to" $(x \mapsto y)$
1 answers
3 votes
688 views
1 bookmarks
Higher order partial derivatives of implicit function?
1 answers
3 votes
189 views
1 bookmarks
What Motivated the Definition of the Orthogonality of Functions?
2 answers
2 votes
56 views
Equivalent forms for $\int \csc(x) dx$
1 answers
2 votes
69 views
1 bookmarks
Correct algorithm for finding regions of increasing / decreasing and the relationship to critical points.
1 answers
2 votes
42 views
is it possible to have $u(1,t) = 10$ and $u(x,0) = x^2$ for $x \in [0,1]$? (heat equation)
1 answers
2 votes
1k views
Why Does the Characteristic Equation of a Differential Equation Depend on the Solution?
1 answers
2 votes
631 views
Why is a semiannular region not simply connected?
0 answers
1 votes
35 views
Is there a term for "rational functions" with non-integer powers $\frac{n_1x^{p_1/q_1} + \dots}{D(x)}$?
1 answers
1 votes
47 views
Is there an expression for $i, j, k \in \left\{1,\, 2,\, 3\right\}$ with $i \neq j \neq k$?
4 answers
1 votes
95 views
Efficient method for minimizing $f = x^4 + 2y^4 + 3z^4$ over the unit sphere.
0 answers
1 votes
42 views
Do we distinguish between row and column vectors when speaking of $\mathbb{R}^n$?
0 answers
1 votes
39 views
How to refer to an interval when it is not (yet) known whether it is open or closed? (Notation for intervals)
0 answers
1 votes
50 views
2 bookmarks
Extending the Binomial Series of $(a+x)^{k}$ to Cases Where $a<0$ Via Substitution
0 answers
1 votes
221 views
2 bookmarks
Intuitive understanding of Taylor's Inequality (Lagrange's remainder)
3 answers
1 votes
98 views
understanding when "order" is implied by the multiplication principle
1 answers
1 votes
83 views
Combinations vs. permutations: knowing when and how to account for order Part 2
1 answers
1 votes
143 views
Volume of revolution with coordinate transformation.
0 answers
1 votes
98 views
1 bookmarks
Understanding (Implicit) Partial Derivatives
0 answers
1 votes
137 views
Applying boundary conditions for differential operator to show operator is hermitian.
1 answers
1 votes
45 views
Why does the domain affect whether or not a vector field is conservative?