List questions from elementary-functions

Published on 16 Jan 2024 - 1:46

45

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Are all multivariate elementary functions $C^\infty$ on any open ball for which they are defined?

Published on 18 Jan 2024 - 21:32

138

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Polynomial evaluation at zero.

Published on 22 Jan 2024 - 0:24

41

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What is the image of $|z|<\frac{1}{2}$ under the action of $f(z)=\frac{1}{2}\left( z+\frac{1}{z} \right)$?

Published on 05 Feb 2024 - 4:56

29

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College Algebra Function Transformations Unique?

Published on 14 Feb 2024 - 0:31

126

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Is there an "elementary irrational number" without a certain digit in its decimal presentation?

Published on 16 Feb 2024 - 13:52

102

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Is there a spelling mistake or am I missing something

Published on 23 Feb 2026 - 5:40

28

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Variants of geometric sum formula

Published on 21 Feb 2024 - 15:21

72

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Error Propagation in calculating Binary logarithm by hand

Published on 25 Mar 2026 - 18:07

27

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Given $f:\bigcup_{m\in\mathbb{N}}\mathcal{P}(A_m)^N\to A_m$ and any $B\subsetneq A_m$, can I define its restriction to $\mathcal{P}(B)^N$?

Published on 27 Feb 2024 - 10:48

24

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what is the unit of this rate of change?

Published on 26 Mar 2026 - 0:53

41

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Minimum of a+b+c given an exponential equation

Published on 08 Jan 2015 - 12:54

365

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What are equivalent parametric equations?

Published on 30 Jan 2015 - 10:15

410

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What is the smallest fraction produced by a sum of fractions with bounded denominator?

Published on 02 Feb 2015 - 4:21

161

Views

Liouville–Hardy theorem: when is $\int f(x) \log(x) dx$ elementary?

Published on 02 Feb 2015 - 16:20

List Question

Exact solution to system of first-order coupled nonlinear ODEs

Are all multivariate elementary functions $C^\infty$ on any open ball for which they are defined?

Polynomial evaluation at zero.

What is the image of $|z|<\frac{1}{2}$ under the action of $f(z)=\frac{1}{2}\left( z+\frac{1}{z} \right)$?

College Algebra Function Transformations Unique?

Is there an "elementary irrational number" without a certain digit in its decimal presentation?

Is there a spelling mistake or am I missing something

Variants of geometric sum formula

Error Propagation in calculating Binary logarithm by hand

Given $f:\bigcup_{m\in\mathbb{N}}\mathcal{P}(A_m)^N\to A_m$ and any $B\subsetneq A_m$, can I define its restriction to $\mathcal{P}(B)^N$?

what is the unit of this rate of change?

Minimum of a+b+c given an exponential equation

What are equivalent parametric equations?

What is the smallest fraction produced by a sum of fractions with bounded denominator?

Liouville–Hardy theorem: when is $\int f(x) \log(x) dx$ elementary?

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