Question

Please help to check my ans and correct me if i am wrong

score 61 · Answer 1 · 2018-02-22 09:32:06

61

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Please help to check my ans and correct me if i am wrong

Published on 22 Feb 2018 - 9:32

score 225 · Answer 2 · 2026-03-25 12:27:09

225

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Find the maximum of harmonic mean of coordinate

Published on 25 Mar 2026 - 12:27

score 4.2k · Answer 3 · 2018-02-22 13:47:22

4.2k

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Proof check: Show the polynomial is a linear transformation

Published on 22 Feb 2018 - 13:47

score 4.1k · Answer 4 · 2018-02-22 15:38:25

4.1k

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Limit of a continuous function is a function of a limit?

Published on 22 Feb 2018 - 15:38

score 67 · Answer 5 · 2026-03-26 19:01:56

67

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Find all $z$ s.t $|z|=1$ and $|z^2 + \overline{z}^2|=1$

Published on 26 Mar 2026 - 19:01

score 65 · Answer 6 · 2026-03-26 02:52:14

65

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Recursive sequence induction problem

Published on 26 Mar 2026 - 2:52

score 101 · Answer 7 · 2026-03-26 01:04:44

101

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Induction Proof for $\sum \limits_{i=1}^n \frac{2}{(i+1)(i+2)} = \frac{n}{(n+2)}$

Published on 26 Mar 2026 - 1:04

score 92 · Answer 8 · 2018-02-22 21:46:05

92

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Compute $\iiint_D\sqrt{x^2+y^2+z^2} \ dxdydx.$

Published on 22 Feb 2018 - 21:46

score 481 · Answer 9 · 2018-02-23 04:19:12

481

Views

Proof for $f(x)=e^x+x$ strictly increasing

Published on 23 Feb 2018 - 4:19

score 296 · Answer 10 · 2018-02-23 05:05:52

296

Views

Proof of $f(x)=e^x+x$ injective

Published on 23 Feb 2018 - 5:05

score 1.1k · Answer 11 · 2018-02-23 05:42:50

1.1k

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Proof of if $3(x-y)$ is even, then $x$ and $y$ have the same parity

Published on 23 Feb 2018 - 5:42

score 320 · Answer 12 · 2018-02-23 12:08:48

320

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Compute the volume of the body that is bounded by $x^2+y^2\leq 4x, \quad |z|\leq x^2+y^2.$

Published on 23 Feb 2018 - 12:08

score 31 · Answer 13 · 2018-02-23 13:55:46

31

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Ways to proof statement of divisor of linear combination

Published on 23 Feb 2018 - 13:55

score 76 · Answer 14 · 2018-02-23 14:03:08

76

Views

PDE: Guess non-polynomial solution of $\Delta u=\frac{\delta^2u}{\delta x^2}-\frac{\delta^2u}{\delta y^2}=0$

Published on 23 Feb 2018 - 14:03

score 80 · Answer 15 · 2026-03-24 22:12:43

80

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$U = \{v\in V|\phi(v) = 0\ \text{for every }\phi\in U^0\}$

Published on 24 Mar 2026 - 22:12

List Question

Please help to check my ans and correct me if i am wrong

Find the maximum of harmonic mean of coordinate

Proof check: Show the polynomial is a linear transformation

Limit of a continuous function is a function of a limit?

Find all $z$ s.t $|z|=1$ and $|z^2 + \overline{z}^2|=1$

Recursive sequence induction problem

Induction Proof for $\sum \limits_{i=1}^n \frac{2}{(i+1)(i+2)} = \frac{n}{(n+2)}$

Compute $\iiint_D\sqrt{x^2+y^2+z^2} \ dxdydx.$

Proof for $f(x)=e^x+x$ strictly increasing

Proof of $f(x)=e^x+x$ injective

Proof of if $3(x-y)$ is even, then $x$ and $y$ have the same parity

Compute the volume of the body that is bounded by $x^2+y^2\leq 4x, \quad |z|\leq x^2+y^2.$

Ways to proof statement of divisor of linear combination

PDE: Guess non-polynomial solution of $\Delta u=\frac{\delta^2u}{\delta x^2}-\frac{\delta^2u}{\delta y^2}=0$

$U = \{v\in V|\phi(v) = 0\ \text{for every }\phi\in U^0\}$

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