Question

Suppose that $f''(x)>a$ for all $x\in \mathbb{R}$ and some $a>0$. Proof that $f$ has a absolute minimun.

score 97 · Answer 1 · 2026-04-16 01:12:39

97

Views

Suppose that $f''(x)>a$ for all $x\in \mathbb{R}$ and some $a>0$. Proof that $f$ has a absolute minimun.

Published on 16 Apr 2026 - 1:12

score 50 · Answer 2 · 2026-04-16 10:36:21

50

Views

$f$ maximum in $0$, $[0,\epsilon]$ not decreasing infinitely close to $0$

Published on 16 Apr 2026 - 10:36

score 1.4k · Answer 3 · 2026-04-11 06:54:49

1.4k

Views

On how to find the maximum point of a formula.

Published on 11 Apr 2026 - 6:54

score 81 · Answer 4 · 2026-04-16 23:29:21

81

Views

Find $\displaystyle\min_{y \in \mathbb{R}} \displaystyle\max_{0 \le x \le 1} |x^2 - xy|.$

Published on 16 Apr 2026 - 23:29

score 46 · Answer 5 · 2026-04-15 18:30:38

46

Views

$\max_{x,y>0}\left(\min\left\{x,\dfrac{1}{y},y+\dfrac{1}{x}\right\}\right)$.

Published on 15 Apr 2026 - 18:30

score 75 · Answer 6 · 2026-04-14 13:45:02

75

Views

Proving a rectangle of constrained perimeter achieves a maximum area

Published on 14 Apr 2026 - 13:45

score 54 · Answer 7 · 2026-04-11 16:26:19

54

Views

Least likely sample in Multivariate Hypergeometric distributions

Published on 11 Apr 2026 - 16:26

score 48 · Answer 8 · 2026-04-13 02:07:01

48

Views

A trigonometric max-min problem from an old calculus text

Published on 13 Apr 2026 - 2:07

score 107 · Answer 9 · 2026-04-12 20:09:34

107

Views

Find the minimum of function

Published on 12 Apr 2026 - 20:09

score 250 · Answer 10 · 2026-04-17 10:38:35

250

Views

"Guessing" the Shape of a Function based on its Gradient-Vector Field

Published on 17 Apr 2026 - 10:38

score 60 · Answer 11 · 2026-04-14 06:32:16

60

Views

Find a local maximum value of probability function$~P_{\text{B}}(x)~$using natural logarithm function.

Published on 14 Apr 2026 - 6:32

score 44 · Answer 12 · 2026-04-11 17:52:15

44

Views

Can f(x)*g(x) have less local extrema than f(x) if g(x) is increasing and bigger than 0?

Published on 11 Apr 2026 - 17:52

score 41 · Answer 13 · 2026-04-15 08:02:29

41

Views

Help with maxima and inflection points, why are my answers incorrect?

Published on 15 Apr 2026 - 8:02

score 839 · Answer 14 · 2026-04-11 13:15:27

839

Views

Calculating Stationary Points of $f(x,y)=e^{-(x^2+y^2)}$

Published on 11 Apr 2026 - 13:15

score 61 · Answer 15 · 2026-04-12 07:33:23

61

Views

On strike prices of American calls

Published on 12 Apr 2026 - 7:33

List Question

Suppose that $f''(x)>a$ for all $x\in \mathbb{R}$ and some $a>0$. Proof that $f$ has a absolute minimun.

$f$ maximum in $0$, $[0,\epsilon]$ not decreasing infinitely close to $0$

On how to find the maximum point of a formula.

Find $\displaystyle\min_{y \in \mathbb{R}} \displaystyle\max_{0 \le x \le 1} |x^2 - xy|.$

$\max_{x,y>0}\left(\min\left\{x,\dfrac{1}{y},y+\dfrac{1}{x}\right\}\right)$.

Proving a rectangle of constrained perimeter achieves a maximum area

Least likely sample in Multivariate Hypergeometric distributions

A trigonometric max-min problem from an old calculus text

Find the minimum of function

"Guessing" the Shape of a Function based on its Gradient-Vector Field

Find a local maximum value of probability function$~P_{\text{B}}(x)~$using natural logarithm function.

Can f(x)*g(x) have less local extrema than f(x) if g(x) is increasing and bigger than 0?

Help with maxima and inflection points, why are my answers incorrect?

Calculating Stationary Points of $f(x,y)=e^{-(x^2+y^2)}$

On strike prices of American calls

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