Question

Proof of the derivative of a quadratic form

score 2.3k · Answer 1 · 2026-04-13 11:43:33

2.3k

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Proof of the derivative of a quadratic form

Published on 13 Apr 2026 - 11:43

score 95 · Answer 2 · 2026-04-15 13:00:37

95

Views

Existence of derivative of series at $x = 0$

Published on 15 Apr 2026 - 13:00

score 130 · Answer 3 · 2026-04-12 05:08:00

130

Views

Partial Derivative when there are explicit functional relationships

Published on 12 Apr 2026 - 5:08

score 2.4k · Answer 4 · 2026-04-16 02:10:22

2.4k

Views

Show that for all unit vector $u$, the directional derivative $\partial_uf(0,0)$ exists and is zero.

Published on 16 Apr 2026 - 2:10

score 903 · Answer 5 · 2026-04-12 08:39:37

903

Views

Prove the derivative of $\arctan(x)$ using derivative definition

Published on 12 Apr 2026 - 8:39

score 312 · Answer 6 · 2026-04-12 10:27:43

312

Views

I keep failing to understand what I'm doing wrong - derivatives

Published on 12 Apr 2026 - 10:27

score 1k · Answer 7 · 2026-04-16 19:44:16

1k

Views

Basic proof that $\frac{d}{dx}(\sin(nx))=n\cos(nx)$

Published on 16 Apr 2026 - 19:44

score 734 · Answer 8 · 2026-04-11 08:12:53

734

Views

How to Find Functions with Given Condition

Published on 11 Apr 2026 - 8:12

score 20 · Answer 9 · 2026-04-14 03:17:16

20

Views

Set of continuously differentiable function subset of another one

Published on 14 Apr 2026 - 3:17

score 62 · Answer 10 · 2026-04-11 09:24:14

62

Views

Integration question (don't know what to substitute).

Published on 11 Apr 2026 - 9:24

score 39 · Answer 11 · 2026-04-12 04:27:57

39

Views

How to show the following equality for twice differentiable function?

Published on 12 Apr 2026 - 4:27

score 153 · Answer 12 · 2026-04-12 16:14:50

153

Views

Why can't we treat $\text{d}y/\text{d}x$ as a fraction?

Published on 12 Apr 2026 - 16:14

score 162 · Answer 13 · 2026-04-16 02:37:37

162

Views

$ \begin{vmatrix} f(a) & g(a) & h(a) \\ f(b) & g(b) & h(b) \\ f'(c) & g'(c) & h'(c) \\ \end{vmatrix} =0 $

Published on 16 Apr 2026 - 2:37

score 82 · Answer 14 · 2026-04-09 19:47:08

82

Views

How to take derivative of Ky Fan $k$ norms of a matrix $A$: $\frac{\partial\|A\|_k}{\partial A}$

Published on 09 Apr 2026 - 19:47

score 55 · Answer 15 · 2026-04-17 15:50:52

55

Views

Calculate $\lim_{a \to 0}\frac{2^n-(2-a)(2-2^2a)(2-3^2a).....(2-n^2a)}{2^na}$

Published on 17 Apr 2026 - 15:50

List Question

Proof of the derivative of a quadratic form

Existence of derivative of series at $x = 0$

Partial Derivative when there are explicit functional relationships

Show that for all unit vector $u$, the directional derivative $\partial_uf(0,0)$ exists and is zero.

Prove the derivative of $\arctan(x)$ using derivative definition

I keep failing to understand what I'm doing wrong - derivatives

Basic proof that $\frac{d}{dx}(\sin(nx))=n\cos(nx)$

How to Find Functions with Given Condition

Set of continuously differentiable function subset of another one

Integration question (don't know what to substitute).

How to show the following equality for twice differentiable function?

Why can't we treat $\text{d}y/\text{d}x$ as a fraction?

$ \begin{vmatrix} f(a) & g(a) & h(a) \\ f(b) & g(b) & h(b) \\ f'(c) & g'(c) & h'(c) \\ \end{vmatrix} =0 $

How to take derivative of Ky Fan $k$ norms of a matrix $A$: $\frac{\partial\|A\|_k}{\partial A}$

Calculate $\lim_{a \to 0}\frac{2^n-(2-a)(2-2^2a)(2-3^2a).....(2-n^2a)}{2^na}$

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