Question

If the coordinate functions of $f:D\subset\mathbb{R}\rightarrow\mathbb{R}^{2}$ are periodic, is $f$ periodic too?

score 44 · Answer 1 · 2019-02-20 05:58:05

44

Views

If the coordinate functions of $f:D\subset\mathbb{R}\rightarrow\mathbb{R}^{2}$ are periodic, is $f$ periodic too?

Published on 20 Feb 2019 - 5:58

score 92 · Answer 2 · 2026-03-27 00:59:01

92

Views

Find the value of $\int_C F.dr$ for this ellipse

Published on 27 Mar 2026 - 0:59

score 78 · Answer 3 · 2026-03-27 14:52:52

78

Views

Showing that $\lim_{(x,y,z)\to(0,e,-2/3)}\frac{\sqrt[3]{x^4}\left(1-\ln y\right)^\frac 53\left(z+\frac23\right)}{x^4+(y-e)^4+(3z+2)^4}$ does not exist

Published on 27 Mar 2026 - 14:52

score 3.8k · Answer 4 · 2019-02-21 10:42:36

3.8k

Views

Vector operator and scalar operator

Published on 21 Feb 2019 - 10:42

score 587 · Answer 5 · 2019-02-22 00:06:29

587

Views

Show that a convergent sequence in $\mathbb{R}^n$ has a unique limit in $\mathbb{R}^n$.

Published on 22 Feb 2019 - 0:06

score 621 · Answer 6 · 2026-03-25 22:09:15

621

Views

Evaluating line integral over an ellipse

Published on 25 Mar 2026 - 22:09

score 64 · Answer 7 · 2026-03-26 07:58:31

64

Views

Prove that a Cauchy sequence in $\mathbb{R}^n$ is convergent.

Published on 26 Mar 2026 - 7:58

score 1.8k · Answer 8 · 2019-02-22 11:56:33

1.8k

Views

Finding tangent line to the level curve $f(x,y)=6$

Published on 22 Feb 2019 - 11:56

score 85 · Answer 9 · 2019-02-22 15:52:15

85

Views

Prove that if $f$ is continuous then $\Vert f\Vert$ is continuous. Is the converse true?

Published on 22 Feb 2019 - 15:52

score 55 · Answer 10 · 2019-02-22 16:03:16

55

Views

how can you tell by seeing $2ax+2by-2cz=0$ that every tangent plane passes through the origin?

Published on 22 Feb 2019 - 16:03

score 313 · Answer 11 · 2019-02-22 22:31:00

313

Views

How do we relate the exterior derivative of a scalar function to the "differential?"

Published on 22 Feb 2019 - 22:31

score 1.4k · Answer 12 · 2026-03-26 04:16:12

1.4k

Views

Converting Cartesian Components of a Vector on a Sphere to Tangential-Normal Components

Published on 26 Mar 2026 - 4:16

score 495 · Answer 13 · 2019-02-24 02:57:44

495

Views

Show if $v(t).v'(t)=0$ for all $t$ then the speed $v$ is constant.

Published on 24 Feb 2019 - 2:57

score 31 · Answer 14 · 2019-02-24 06:34:09

31

Views

Calculus double integration

Published on 24 Feb 2019 - 6:34

score 204 · Answer 15 · 2026-03-26 04:38:07

204

Views

What is the formal definition of " Express the double integral in polar coordinate "?

Published on 26 Mar 2026 - 4:38

List Question

If the coordinate functions of $f:D\subset\mathbb{R}\rightarrow\mathbb{R}^{2}$ are periodic, is $f$ periodic too?

Find the value of $\int_C F.dr$ for this ellipse

Showing that $\lim_{(x,y,z)\to(0,e,-2/3)}\frac{\sqrt[3]{x^4}\left(1-\ln y\right)^\frac 53\left(z+\frac23\right)}{x^4+(y-e)^4+(3z+2)^4}$ does not exist

Vector operator and scalar operator

Show that a convergent sequence in $\mathbb{R}^n$ has a unique limit in $\mathbb{R}^n$.

Evaluating line integral over an ellipse

Prove that a Cauchy sequence in $\mathbb{R}^n$ is convergent.

Finding tangent line to the level curve $f(x,y)=6$

Prove that if $f$ is continuous then $\Vert f\Vert$ is continuous. Is the converse true?

how can you tell by seeing $2ax+2by-2cz=0$ that every tangent plane passes through the origin?

How do we relate the exterior derivative of a scalar function to the "differential?"

Converting Cartesian Components of a Vector on a Sphere to Tangential-Normal Components

Show if $v(t).v'(t)=0$ for all $t$ then the speed $v$ is constant.

Calculus double integration

What is the formal definition of " Express the double integral in polar coordinate "?

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