Question

Harvesting fish model in mathematical biology

score 132 · Answer 1 · 2026-04-10 16:39:47

132

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Harvesting fish model in mathematical biology

Published on 10 Apr 2026 - 16:39

score 111 · Answer 2 · 2026-04-17 08:15:15

111

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Find points of discontinuity of $\log\left|{\frac{x+2}{x+3}}\right|$

Published on 17 Apr 2026 - 8:15

score 25 · Answer 3 · 2026-04-11 21:17:41

25

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Differential of strict function

Published on 11 Apr 2026 - 21:17

score 382 · Answer 4 · 2026-04-15 21:20:16

382

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$\frac{d}{dx} \int_a^b f(x,t) dt =\int_a^b \frac{\partial}{\partial x}f(x,t)dt?$

Published on 15 Apr 2026 - 21:20

score 1.2k · Answer 5 · 2026-04-18 04:01:33

1.2k

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Derivative of $d^2x/dy^2$

Published on 18 Apr 2026 - 4:01

score 30 · Answer 6 · 2026-04-13 12:20:22

30

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Question regarding minimization and orthogonality

Published on 13 Apr 2026 - 12:20

score 118 · Answer 7 · 2026-04-16 07:27:43

118

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If $\langle f(t,y),y\rangle\leq \alpha(t)\left(1+\Vert y \Vert^2\right),\forall\, t\geq 0,\,y\in\Bbb{R}^n$ then $x'(t)$ has a global solution

Published on 16 Apr 2026 - 7:27

score 24 · Answer 8 · 2026-04-09 06:54:27

24

Views

Solution verification for problem in vectors.

Published on 09 Apr 2026 - 6:54

score 172 · Answer 9 · 2026-04-14 09:46:09

172

Views

Conclusions about derivability of a function $f(x)=x\left|{\log{x}}\right|$

Published on 14 Apr 2026 - 9:46

score 34 · Answer 10 · 2026-04-17 05:54:16

34

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Why is $\left.\frac{\mathrm{d}}{\mathrm{d}t}\mathbb{E}[|X+t|^p]\right|_{t=0}=0$, where $X$ is standard Gaussian?

Published on 17 Apr 2026 - 5:54

score 194 · Answer 11 · 2026-04-16 11:18:12

Let $f : R \to R$ be twice differentiable, $f (x+\pi$) = $f(x)$, $f''(x) + f(x) \geq 0$ $∀$ $x\in {R}$. Prove that $f(x)\geq0$ $∀$ $x\in {R}$

score 211 · Answer 12 · 2026-04-17 11:41:00

211

Views

Let $f(x) = x^3-3x^2+6$ for $x\in \mathbb{R}$ and $g(x) = \max\{f(t); x+1\leq t\leq x+2\}$ for $-3\leq x\leq0$. Need help in understanding $g(x)$.

Published on 17 Apr 2026 - 11:41

score 1.1k · Answer 13 · 2026-04-12 01:19:11

1.1k

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How can one define ordinary derivative of a vector field along a curve?

Published on 12 Apr 2026 - 1:19

score 67 · Answer 14 · 2026-04-17 08:02:47

67

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take derivative of tensor $f(\mathcal{X})= \| \mathcal{X} - \mathcal{A} \|_F^2 + \alpha\| \mathcal{X} - \mathcal{B} \|_F^2 $

Published on 17 Apr 2026 - 8:02

score 2k · Answer 15 · 2026-04-08 20:56:07

2k

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Differentiable Convex Function with multiple global minimum.

Published on 08 Apr 2026 - 20:56

List Question

Harvesting fish model in mathematical biology

Find points of discontinuity of $\log\left|{\frac{x+2}{x+3}}\right|$

Differential of strict function

$\frac{d}{dx} \int_a^b f(x,t) dt =\int_a^b \frac{\partial}{\partial x}f(x,t)dt?$

Derivative of $d^2x/dy^2$

Question regarding minimization and orthogonality

If $\langle f(t,y),y\rangle\leq \alpha(t)\left(1+\Vert y \Vert^2\right),\forall\, t\geq 0,\,y\in\Bbb{R}^n$ then $x'(t)$ has a global solution

Solution verification for problem in vectors.

Conclusions about derivability of a function $f(x)=x\left|{\log{x}}\right|$

Why is $\left.\frac{\mathrm{d}}{\mathrm{d}t}\mathbb{E}[|X+t|^p]\right|_{t=0}=0$, where $X$ is standard Gaussian?

Let $f : R \to R$ be twice differentiable, $f (x+\pi$) = $f(x)$, $f''(x) + f(x) \geq 0$ $∀$ $x\in {R}$. Prove that $f(x)\geq0$ $∀$ $x\in {R}$

Let $f(x) = x^3-3x^2+6$ for $x\in \mathbb{R}$ and $g(x) = \max\{f(t); x+1\leq t\leq x+2\}$ for $-3\leq x\leq0$. Need help in understanding $g(x)$.

How can one define ordinary derivative of a vector field along a curve?

take derivative of tensor $f(\mathcal{X})= \| \mathcal{X} - \mathcal{A} \|_F^2 + \alpha\| \mathcal{X} - \mathcal{B} \|_F^2 $

Differentiable Convex Function with multiple global minimum.

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