Question

Width of the Eiffel Tower as a function of height?

score 963 · Answer 1 · 2014-09-02 12:45:31

963

Views

Width of the Eiffel Tower as a function of height?

Published on 02 Sep 2014 - 12:45

score 59 · Answer 2 · 2014-09-05 08:02:02

59

Views

The existence of integral equations solution for a 2-dimensional unknown function

Published on 05 Sep 2014 - 8:02

score 103 · Answer 3 · 2014-09-05 10:16:11

103

Views

Is there such a function $f:R\rightarrow R$?

Published on 05 Sep 2014 - 10:16

score 139 · Answer 4 · 2014-09-07 14:05:38

139

Views

Cauchy's functional equation with polynomial: $ f ( u + a v ) = f ( u ) + f ( a v ) + P _ n ( u , v ) $

Published on 07 Sep 2014 - 14:05

score 110 · Answer 5 · 2014-09-09 23:17:45

110

Views

Solutions of the functional equation $f\big(x+g(y)\big)=f(x)+f\big(g(y)\big)$

Published on 09 Sep 2014 - 23:17

score 29 · Answer 6 · 2026-03-26 12:57:53

29

Views

How do I find and list compositions for (f) and (g)?

Published on 26 Mar 2026 - 12:57

score 102 · Answer 7 · 2026-03-25 17:26:15

102

Views

How to solve the following delay differential equation?

Published on 25 Mar 2026 - 17:26

score 146 · Answer 8 · 2014-09-13 10:01:46

146

Views

How find this function such $f(2010f(n)+1389)=1+1389+1389^2+1389^3+\cdots+1389^{2010}+n$

Published on 13 Sep 2014 - 10:01

score 54 · Answer 9 · 2014-09-13 23:22:05

54

Views

Writing roots of f(x) as f(a) for some a

Published on 13 Sep 2014 - 23:22

score 394 · Answer 10 · 2014-09-17 18:16:44

394

Views

Finding all real valued functions that satisfy $f(f(y) + xf(x)) = y + (f(x))^2$

Published on 17 Sep 2014 - 18:16

score 169 · Answer 11 · 2026-03-26 14:34:54

169

Views

At most $n$ functions satisfy $f(x)=\bigl(x-f(a_1)\bigr)\bigl(x-f(a_2)\bigr)\dots\bigl(x-f(a_n)\bigr)$?

Published on 26 Mar 2026 - 14:34

score 600 · Answer 12 · 2014-09-18 09:19:16

600

Views

What functions satisfy the functional equation $f(x)-g(x)=f\big(g(x)\big)$?

Published on 18 Sep 2014 - 9:19

score 199 · Answer 13 · 2014-09-24 05:47:27

199

Views

How find this all function $f(x^n+2f(y))=(f(x))^n+y+f(y)$

Published on 24 Sep 2014 - 5:47

score 582 · Answer 14 · 2014-09-24 07:43:58

582

Views

Prove that there is no function $f:\Bbb{R}\to\Bbb{R}$ with $f(0)>0$ such that $\forall x,y\in\Bbb{R}, f(x+y)\geq f(x)+y f(f(x))$

Published on 24 Sep 2014 - 7:43

score 311 · Answer 15 · 2014-09-26 06:22:30

311

Views

Polynomial satisfying $ P \big(P (x)\big)=P (x)+ P\big(x^2\big)$

Published on 26 Sep 2014 - 6:22

List Question

Width of the Eiffel Tower as a function of height?

The existence of integral equations solution for a 2-dimensional unknown function

Is there such a function $f:R\rightarrow R$?

Cauchy's functional equation with polynomial: $ f ( u + a v ) = f ( u ) + f ( a v ) + P _ n ( u , v ) $

Solutions of the functional equation $f\big(x+g(y)\big)=f(x)+f\big(g(y)\big)$

How do I find and list compositions for (f) and (g)?

How to solve the following delay differential equation?

How find this function such $f(2010f(n)+1389)=1+1389+1389^2+1389^3+\cdots+1389^{2010}+n$

Writing roots of f(x) as f(a) for some a

Finding all real valued functions that satisfy $f(f(y) + xf(x)) = y + (f(x))^2$

At most $n$ functions satisfy $f(x)=\bigl(x-f(a_1)\bigr)\bigl(x-f(a_2)\bigr)\dots\bigl(x-f(a_n)\bigr)$?

What functions satisfy the functional equation $f(x)-g(x)=f\big(g(x)\big)$?

How find this all function $f(x^n+2f(y))=(f(x))^n+y+f(y)$

Prove that there is no function $f:\Bbb{R}\to\Bbb{R}$ with $f(0)>0$ such that $\forall x,y\in\Bbb{R}, f(x+y)\geq f(x)+y f(f(x))$

Polynomial satisfying $ P \big(P (x)\big)=P (x)+ P\big(x^2\big)$

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