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What is the analogue of spherical coordinates in $n$-dimensions?
What's the analogue to spherical coordinates in $n$-dimensions? For example, for $n=2$ the analogue are polar coordinates $r,\theta$, which are relat...
Apr 14, 2026
Archive: News
![find all values of x that are not in the domain of h [closed]](https://news.conceivablytech.com/uploads/find-all-values-of-x-that-are-not-in-the-domain-of-h-closed_720.jpg)
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find all values of x that are not in the domain of h [closed]
$$ h(x) = \frac{x-7}{x^2 - 3x -10} $$ Can someone help, I need to find all values of x that are not in the domain of h
Apr 14, 2026
news
Range of A and null space of the transpose of A
So I'm complete stuck with something. I know it the following statements are true (or at least the seem to be from the results that I got from messin...
Apr 14, 2026
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maclaurin series of $f(x)=xe^{-x}$
I'm not sure how to do: $$f(x)=xe^{-x}$$I did this one so far: $$ f(x) = x^2 \cos x = x^2 \left( 1 - \dfrac{x^2}{2!} + \dfrac{x^4}{4!} - \dfrac{x^6}{...
Apr 14, 2026
![What exactly is a basis function? [duplicate]](https://news.conceivablytech.com/uploads/what-exactly-is-a-basis-function-duplicate_720.jpg)
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What exactly is a basis function? [duplicate]
Jean Baptiste Joseph Fourier (1798–1830) was a French mathematician who is most widely recognized for his development of what we now call Fourier Se...
Apr 14, 2026
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why do people say "x dimensional vector" when vectors have only one dimension?
I am new to linear algebra and have been confused by the terminology "n dimensional vector" that my online course instructor uses. He refers to vectors as...
Apr 14, 2026
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Square root property to solve quadratic equation: $3(x-4)^2=15$ I get $\sqrt{21}$ but solution is $4+-\sqrt{5}$
I am to solve for x using square root property: $3(x-4)^2=15$ The textbook solution is $4+-\sqrt{5}$ and I am unable to arrive at this. I arrived at $\sqr...
Apr 14, 2026
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Intuitive Explanation of Riemann Surfaces and what they are used for?
I took my first class on Complex Analysis last semester and I wanted to continue learning more about it this semester doing independent readings. I was ad...
Apr 14, 2026
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How to read negative radians in the interval?
Say a function's domain is $\{-\pi/2, \pi/2\}$. How should I interpret this interval? It starts from where? To where? In what direction? And if it st...
Apr 14, 2026
news
Mean curvature in terms of Christoffel symbols
The Setup is the following: Let ($N$,g) be a Riemannian $n$-manifold and $M \subset N$ an embedded codimension 1 submanifold, everything oriented. My goal...
Apr 14, 2026
