Question

Why does is that there only has to be one $x$ needed to satisfy the equation to prove that it is a subset of the image (range)?

score 47 · Answer 1 · 2026-04-02 03:50:55

47

Views

Why does is that there only has to be one $x$ needed to satisfy the equation to prove that it is a subset of the image (range)?

Published on 02 Apr 2026 - 3:50

score 2.7k · Answer 2 · 2026-04-11 15:42:38

2.7k

Views

Solving green function for first quadrant with boundary conditions (dirichlet problem?)

Published on 11 Apr 2026 - 15:42

score 42 · Answer 3 · 2018-09-29 01:03:21

42

Views

Different expressions for multivalued logarithm

Published on 29 Sep 2018 - 1:03

score 72 · Answer 4 · 2018-09-29 01:38:22

Let $\mathcal F$ be the set of mappings $f: \Bbb N \to \Bbb N$ for which $f(m) \le f(n)$ for $m \le n$. Show that $\mathcal F$ is uncountable

score 1.4k · Answer 5 · 2026-03-28 06:00:34

1.4k

Views

Selecting $15$ pieces of fruit from a bowl containing apples, bananas, oranges, and pears with conditions

Published on 28 Mar 2026 - 6:00

score 103 · Answer 6 · 2026-03-27 00:05:49

103

Views

Let $\mathcal F$ be the set of mappings $f:\Bbb N \to \Bbb N$ for which $f(m) \ge f(n)$ for $m \le n$. Show that $\mathcal F$ is countable

Published on 27 Mar 2026 - 0:05

score 347 · Answer 7 · 2018-09-29 05:15:39

347

Views

Finding all values of $z\in\mathbb{C}$ such that $\cosh(z)=-1$

Published on 29 Sep 2018 - 5:15

score 53 · Answer 8 · 2026-04-05 16:36:34

53

Views

Proving that $l_∞$ is complete

Published on 05 Apr 2026 - 16:36

score 96 · Answer 9 · 2026-03-25 17:20:55

96

Views

Use chain rule to compute partial derivative of $\sum\limits_k\left(\sum\limits_j\vert H_{kj}\vert\right)^2$

Published on 25 Mar 2026 - 17:20

score 40 · Answer 10 · 2018-09-29 08:56:14

40

Views

Check proof that only solution of $y'(x)=y(x)^2$ bounded on the whole real line is $y(x)=0$

Published on 29 Sep 2018 - 8:56

score 56 · Answer 11 · 2026-04-09 14:14:10

56

Views

Need help finding factor of a polynomial.

Published on 09 Apr 2026 - 14:14

score 388 · Answer 12 · 2026-03-26 07:34:51

388

Views

The uniqueness (up to isomorphism) of the complete linear ordering that has a countable dense subset

Published on 26 Mar 2026 - 7:34

score 278 · Answer 13 · 2026-03-25 06:30:35

278

Views

Classifying singular points of $\frac{\sin(z^2)}{z^3-\frac{\pi}{4}z^2}$

Published on 25 Mar 2026 - 6:30

score 347 · Answer 14 · 2026-04-09 15:51:58

347

Views

Is there an elementary argument for $\prod\limits_{p \le n}p < 3^n$ where $p$ is prime.

Published on 09 Apr 2026 - 15:51

score 99 · Answer 15 · 2026-03-30 22:16:52

99

Views

For which $P$ do $Q,R\in g$ exist, so that $k$ is the incircle of $\Delta PQR$?

Published on 30 Mar 2026 - 22:16

List Question

Why does is that there only has to be one $x$ needed to satisfy the equation to prove that it is a subset of the image (range)?

Solving green function for first quadrant with boundary conditions (dirichlet problem?)

Different expressions for multivalued logarithm

Let $\mathcal F$ be the set of mappings $f: \Bbb N \to \Bbb N$ for which $f(m) \le f(n)$ for $m \le n$. Show that $\mathcal F$ is uncountable

Selecting $15$ pieces of fruit from a bowl containing apples, bananas, oranges, and pears with conditions

Let $\mathcal F$ be the set of mappings $f:\Bbb N \to \Bbb N$ for which $f(m) \ge f(n)$ for $m \le n$. Show that $\mathcal F$ is countable

Finding all values of $z\in\mathbb{C}$ such that $\cosh(z)=-1$

Proving that $l_∞$ is complete

Use chain rule to compute partial derivative of $\sum\limits_k\left(\sum\limits_j\vert H_{kj}\vert\right)^2$

Check proof that only solution of $y'(x)=y(x)^2$ bounded on the whole real line is $y(x)=0$

Need help finding factor of a polynomial.

The uniqueness (up to isomorphism) of the complete linear ordering that has a countable dense subset

Classifying singular points of $\frac{\sin(z^2)}{z^3-\frac{\pi}{4}z^2}$

Is there an elementary argument for $\prod\limits_{p \le n}p < 3^n$ where $p$ is prime.

For which $P$ do $Q,R\in g$ exist, so that $k$ is the incircle of $\Delta PQR$?

Trending Questions

Popular # Hahtags

Popular Questions