List questions from functions

Published on 11 Apr 2026 - 5:15

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Curve dense inside the unit circle

Published on 15 Apr 2026 - 7:53

169

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Check the following functions for injectivity and surjectivity

Published on 18 Apr 2026 - 8:15

28

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Anything special on the ratio of partial over total functions?

Published on 09 Apr 2026 - 6:10

169

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Domain of a continuous function

Published on 14 Apr 2026 - 5:05

57

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Trigonometric function based sums

Published on 13 Apr 2026 - 13:16

63

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Understanding the meaning of $\phi :G\times X\to X$

Published on 14 Apr 2026 - 4:43

60

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Find possible value of $g(3)$

Published on 14 Apr 2026 - 3:52

76

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Does the inequality $|\frac{1-x}{(\sqrt x +1)^2}|<1$ hold for $x>0$?

Published on 16 Apr 2026 - 10:21

108

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Proving Cardinality of Cosets in Abstract Algebra

Published on 11 Apr 2026 - 10:37

129

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Function with roots at $1, \frac{1}{2}, \frac{1}{3}, \frac{1}{4}, ...$?

Published on 16 Apr 2026 - 9:17

78

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Find the range of $f:\ (0,\infty)\ \longrightarrow\ \mathbb{R}:\ x\ \longmapsto\ \sin(\frac{1}{x})$.

Published on 16 Apr 2026 - 1:23

4.4k

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Prove: If $f$ and $g$ are bijective, then $g\circ f$ is bijective.

Published on 15 Apr 2026 - 7:43

221

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Find all positive integers $x$ such that $[\frac{x}{5}]-[\frac{x}{7}]=1$, where, for any real number $t$, $[t]$ denotes the greatest integer $\le t$

Published on 17 Apr 2026 - 13:53

56

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Understanding this theorem and how to go about proving it surjectivity?

Published on 14 Apr 2026 - 23:43

List Question

Rational function in integral form

Curve dense inside the unit circle

Check the following functions for injectivity and surjectivity

Anything special on the ratio of partial over total functions?

Domain of a continuous function

Trigonometric function based sums

Understanding the meaning of $\phi :G\times X\to X$

Find possible value of $g(3)$

Does the inequality $|\frac{1-x}{(\sqrt x +1)^2}|<1$ hold for $x>0$?

Proving Cardinality of Cosets in Abstract Algebra

Function with roots at $1, \frac{1}{2}, \frac{1}{3}, \frac{1}{4}, ...$?

Find the range of $f:\ (0,\infty)\ \longrightarrow\ \mathbb{R}:\ x\ \longmapsto\ \sin(\frac{1}{x})$.

Prove: If $f$ and $g$ are bijective, then $g\circ f$ is bijective.

Find all positive integers $x$ such that $[\frac{x}{5}]-[\frac{x}{7}]=1$, where, for any real number $t$, $[t]$ denotes the greatest integer $\le t$

Understanding this theorem and how to go about proving it surjectivity?

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