Question

Show that $2\max\{a+b,0\}+2\max\{c+d,0\}>\max\{a+b+c+d,0\}+\max\{a,0\}+\max\{b,0\}+\max\{c,0\}+\max\{d,0\}$

score 123 · Answer 1 · 2020-09-10 04:49:52

123

Views

Show that $2\max\{a+b,0\}+2\max\{c+d,0\}>\max\{a+b+c+d,0\}+\max\{a,0\}+\max\{b,0\}+\max\{c,0\}+\max\{d,0\}$

Published on 10 Sep 2020 - 4:49

score 63 · Answer 2 · 2020-09-10 11:27:53

63

Views

Solution to inequality

Published on 10 Sep 2020 - 11:27

score 76 · Answer 3 · 2026-04-09 20:22:46

76

Views

Inequality with a, b, c about finding minimal and maximal value

Published on 09 Apr 2026 - 20:22

score 161 · Answer 4 · 2026-04-09 17:02:03

161

Views

Is this claim true about the global minimum of a function?

Published on 09 Apr 2026 - 17:02

score 581 · Answer 5 · 2020-09-12 09:59:27

581

Views

Find the value of $k$ which minimises $F(k)= \int_{0}^{4} |x(4-x)-k|dx$

Published on 12 Sep 2020 - 9:59

score 95 · Answer 6 · 2020-09-15 00:09:08

95

Views

solve the trigonometric equation: $2(1 - \cos(x))-x\sin(x)=0$ for find a global maximum

Published on 15 Sep 2020 - 0:09

score 30 · Answer 7 · 2020-09-15 10:58:00

30

Views

Minimize function - nested square roots

Published on 15 Sep 2020 - 10:58

score 89 · Answer 8 · 2020-09-16 02:06:49

89

Views

Suppose $f$ is continuous on $\mathbb R$ and $f(0)=1$ and $\lim_{x\to\infty} f(x)=0$. Show that $f$ must have a max/min on $\mathbb R$

Published on 16 Sep 2020 - 2:06

score 231 · Answer 9 · 2026-03-30 13:20:16

231

Views

Find the sign of eigenvalues generated from Hessian matrix

Published on 30 Mar 2026 - 13:20

score 33 · Answer 10 · 2026-04-10 05:47:40

33

Views

If local minimum whenever assuming value then global

Published on 10 Apr 2026 - 5:47

score 1.5k · Answer 11 · 2026-04-11 00:33:33

1.5k

Views

Are endpoints critical points?

Published on 11 Apr 2026 - 0:33

score 1.6k · Answer 12 · 2020-09-20 18:36:28

1.6k

Views

If two positive integers x and y such that $x + 2y = 60$ then find the max vaue of xy?

Published on 20 Sep 2020 - 18:36

score 126 · Answer 13 · 2026-04-01 03:42:39

126

Views

Minimum of a function without calculus. $a=\frac{{(1+t^2)}^3}{t^4}$

Published on 01 Apr 2026 - 3:42

score 4k · Answer 14 · 2026-04-11 14:37:13

4k

Views

Quick Relative Extrema Question

Published on 11 Apr 2026 - 14:37

score 356 · Answer 15 · 2020-09-22 06:43:48

356

Views

The maximum value of the smaller root of given quadratic function

Published on 22 Sep 2020 - 6:43

List Question

Show that $2\max\{a+b,0\}+2\max\{c+d,0\}>\max\{a+b+c+d,0\}+\max\{a,0\}+\max\{b,0\}+\max\{c,0\}+\max\{d,0\}$

Solution to inequality

Inequality with a, b, c about finding minimal and maximal value

Is this claim true about the global minimum of a function?

Find the value of $k$ which minimises $F(k)= \int_{0}^{4} |x(4-x)-k|dx$

solve the trigonometric equation: $2(1 - \cos(x))-x\sin(x)=0$ for find a global maximum

Minimize function - nested square roots

Suppose $f$ is continuous on $\mathbb R$ and $f(0)=1$ and $\lim_{x\to\infty} f(x)=0$. Show that $f$ must have a max/min on $\mathbb R$

Find the sign of eigenvalues generated from Hessian matrix

If local minimum whenever assuming value then global

Are endpoints critical points?

If two positive integers x and y such that $x + 2y = 60$ then find the max vaue of xy?

Minimum of a function without calculus. $a=\frac{{(1+t^2)}^3}{t^4}$

Quick Relative Extrema Question

The maximum value of the smaller root of given quadratic function

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