Question

$B$ symmetric, then exists $\lambda\ge 0$ such that $B+\lambda I$ is positive definite

score 387 · Answer 1 · 2026-03-30 15:44:52

387

Views

$B$ symmetric, then exists $\lambda\ge 0$ such that $B+\lambda I$ is positive definite

Published on 30 Mar 2026 - 15:44

score 282 · Answer 2 · 2026-05-14 22:05:45

282

Views

Design a nonlinear least squares function with multiple local minima

Published on 14 May 2026 - 22:05

score 1.2k · Answer 3 · 2026-03-30 15:44:53

1.2k

Views

Newton method to solve $x^2-a=0$

Published on 30 Mar 2026 - 15:44

score 324 · Answer 4 · 2026-03-30 15:45:04

324

Views

Isn't the Cauchy point just a linear exact search instead of a trust region method search?

Published on 30 Mar 2026 - 15:45

score 36 · Answer 5 · 2026-05-14 16:54:32

36

Views

Derivative with single integral of variable limits, but with separate integration variable.

Published on 14 May 2026 - 16:54

score 27 · Answer 6 · 2026-03-26 04:32:07

27

Views

Nonlinear distortion that maintains unit length of vectors

Published on 26 Mar 2026 - 4:32

score 173 · Answer 7 · 2026-05-10 13:24:01

173

Views

Minimizing function with inequality constraints in R^n

Published on 10 May 2026 - 13:24

score 620 · Answer 8 · 2026-03-30 15:42:42

620

Views

Does adding a constant preserve argmax?

Published on 30 Mar 2026 - 15:42

score 95 · Answer 9 · 2026-05-14 22:08:35

95

Views

Show that $\|b \|^2\ (\sin\theta)^2 = \min_x\ \|ax-b\|^2$ where $\theta$ is the angle between $a,\ b$.

Published on 14 May 2026 - 22:08

score 109 · Answer 10 · 2026-04-09 06:04:10

109

Views

Minimizing a nonlinear functional over finite elements

Published on 09 Apr 2026 - 6:04

score 107 · Answer 11 · 2026-05-10 22:32:02

107

Views

Two different ways to train a neural network

Published on 10 May 2026 - 22:32

score 465 · Answer 12 · 2026-03-30 15:42:41

465

Views

how can I do online Expectation–maximization algorithm?

Published on 30 Mar 2026 - 15:42

score 78 · Answer 13 · 2026-05-14 22:05:02

78

Views

Ant farm population function model.

Published on 14 May 2026 - 22:05

score 67 · Answer 14 · 2026-05-14 22:05:02

67

Views

Identifying an unknown function in an exponential function

Published on 14 May 2026 - 22:05

score 39 · Answer 15 · 2026-03-28 17:41:10

39

Views

Let $C \subset \mathbb{R}^n$ be a given set. Show that the set $C^o = {\{y \in \mathbb{R}^n : y^Tx \le 0, \forall x \in C\}}$ is convex.

Published on 28 Mar 2026 - 17:41

List Question

$B$ symmetric, then exists $\lambda\ge 0$ such that $B+\lambda I$ is positive definite

Design a nonlinear least squares function with multiple local minima

Newton method to solve $x^2-a=0$

Isn't the Cauchy point just a linear exact search instead of a trust region method search?

Derivative with single integral of variable limits, but with separate integration variable.

Nonlinear distortion that maintains unit length of vectors

Minimizing function with inequality constraints in R^n

Does adding a constant preserve argmax?

Show that $\|b \|^2\ (\sin\theta)^2 = \min_x\ \|ax-b\|^2$ where $\theta$ is the angle between $a,\ b$.

Minimizing a nonlinear functional over finite elements

Two different ways to train a neural network

how can I do online Expectation–maximization algorithm?

Ant farm population function model.

Identifying an unknown function in an exponential function

Let $C \subset \mathbb{R}^n$ be a given set. Show that the set $C^o = {\{y \in \mathbb{R}^n : y^Tx \le 0, \forall x \in C\}}$ is convex.

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