Question

Find the Cylindrical and cartesian equation of the above cone

score 1k · Answer 1 · 2026-04-13 16:57:36

1k

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Find the Cylindrical and cartesian equation of the above cone

Published on 13 Apr 2026 - 16:57

score 83 · Answer 2 · 2026-04-16 22:53:42

83

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Show that if $\textbf{U}$ is open in $\mathbb{R^n}$, then $A\cap U$ is dense in $\textbf{U}$.

Published on 16 Apr 2026 - 22:53

score 1.3k · Answer 3 · 2026-03-25 00:24:28

1.3k

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Why is any arbitrary directional derivative always recoverable from the gradient?

Published on 25 Mar 2026 - 0:24

score 144 · Answer 4 · 2026-04-11 17:11:13

144

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How do I approximate a function in the form $z = f(x, y)$ of a real-life 3D surface?

Published on 11 Apr 2026 - 17:11

score 104 · Answer 5 · 2026-04-14 02:33:21

104

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Can the trigonometric limit be evaluated by "induction"?

Published on 14 Apr 2026 - 2:33

score 256 · Answer 6 · 2026-04-14 16:06:49

256

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Can you use the chain rule in vector calculus to compute the gradient of a matrix?

Published on 14 Apr 2026 - 16:06

score 63 · Answer 7 · 2026-04-10 09:56:31

63

Views

Convergence of an integral, without evaluating it

Published on 10 Apr 2026 - 9:56

score 438 · Answer 8 · 2026-04-20 08:54:39

438

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Solving $n/\ln (n) = 990,000$

Published on 20 Apr 2026 - 8:54

score 1.4k · Answer 9 · 2026-04-16 14:58:53

1.4k

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Determine whether the following set is compact: $\{(x,y)\} \in \mathbb{R^2} : 2x^2 - y^2 \leq 1\}$

Published on 16 Apr 2026 - 14:58

score 34 · Answer 10 · 2026-04-13 10:56:48

34

Views

why do we need to multiply derivative by tiny change in the parameter surface to get the difference

Published on 13 Apr 2026 - 10:56

score 181 · Answer 11 · 2026-04-13 04:43:13

181

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Determine if the set $\{\textbf{x} \in \mathbb{R^2} : 2\leq \|\textbf{x}\| \leq 4 \}$ is compact

Published on 13 Apr 2026 - 4:43

score 56 · Answer 12 · 2026-04-17 12:45:13

56

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Write the suitable domain for $\int\frac{t^2}{t^2+5t+4}\,dt$

Published on 17 Apr 2026 - 12:45

score 2.3k · Answer 13 · 2026-04-11 09:33:23

2.3k

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Show that the union of finitely many compact sets is compact

Published on 11 Apr 2026 - 9:33

score 61 · Answer 14 · 2026-04-16 03:13:52

61

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Not sure if I'm doing this substitution question right

Published on 16 Apr 2026 - 3:13

score 121 · Answer 15 · 2026-04-15 10:00:36

121

Views

I want to practice algebra&trigonometry precalculus hard problems

Published on 15 Apr 2026 - 10:00

List Question

Find the Cylindrical and cartesian equation of the above cone

Show that if $\textbf{U}$ is open in $\mathbb{R^n}$, then $A\cap U$ is dense in $\textbf{U}$.

Why is any arbitrary directional derivative always recoverable from the gradient?

How do I approximate a function in the form $z = f(x, y)$ of a real-life 3D surface?

Can the trigonometric limit be evaluated by "induction"?

Can you use the chain rule in vector calculus to compute the gradient of a matrix?

Convergence of an integral, without evaluating it

Solving $n/\ln (n) = 990,000$

Determine whether the following set is compact: $\{(x,y)\} \in \mathbb{R^2} : 2x^2 - y^2 \leq 1\}$

why do we need to multiply derivative by tiny change in the parameter surface to get the difference

Determine if the set $\{\textbf{x} \in \mathbb{R^2} : 2\leq \|\textbf{x}\| \leq 4 \}$ is compact

Write the suitable domain for $\int\frac{t^2}{t^2+5t+4}\,dt$

Show that the union of finitely many compact sets is compact

Not sure if I'm doing this substitution question right

I want to practice algebra&trigonometry precalculus hard problems

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