Question

Summation from a real number to a complex number

score 79 · Answer 1 · 2026-04-01 14:01:48

79

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Summation from a real number to a complex number

Published on 01 Apr 2026 - 14:01

score 94 · Answer 2 · 2026-03-26 17:43:22

94

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Does $\sqrt{i^4} = i^2$?

Published on 26 Mar 2026 - 17:43

score 65 · Answer 3 · 2018-10-16 23:39:44

65

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Determine the number of point $z \in \mathbb{C}$ such that $(2z+i\overline{z})^3=27i$

Published on 16 Oct 2018 - 23:39

score 29 · Answer 4 · 2026-03-27 00:56:28

29

Views

Quadratic Taylor coefficient for free by normalizing; when is second Taylor coefficient real?

Published on 27 Mar 2026 - 0:56

score 711 · Answer 5 · 2018-10-17 00:24:15

711

Views

Does this equation have a complex number solution?

Published on 17 Oct 2018 - 0:24

score 277 · Answer 6 · 2026-03-25 14:37:37

277

Views

Let $f$ be the disk $D[0, 1]$ be a holomorphic function. Show the following

Published on 25 Mar 2026 - 14:37

score 173 · Answer 7 · 2018-10-17 05:25:34

173

Views

Doesn't $i=-i$ from the definition $i^2=-1$?

Published on 17 Oct 2018 - 5:25

score 259 · Answer 8 · 2018-10-17 10:07:03

259

Views

Generalizations of the field concept to triplets of elements

Published on 17 Oct 2018 - 10:07

score 297 · Answer 9 · 2018-10-17 11:12:27

297

Views

Using the fifth root of unity to show the cosine equation

Published on 17 Oct 2018 - 11:12

score 112 · Answer 10 · 2018-10-17 11:51:09

112

Views

$\int^0_{-\pi} {i e^{2it}\sin(2t)}$ by parts?

Published on 17 Oct 2018 - 11:51

score 21 · Answer 11 · 2026-03-28 06:40:46

21

Views

can I use the following formula for polar coordinates as well?

Published on 28 Mar 2026 - 6:40

score 123 · Answer 12 · 2018-10-17 15:25:40

123

Views

Prove that $arg(z') = \frac{\pi}{2}+(\vec {BM}\;;\vec{AM}) +2k\pi$ where k is an integer.

Published on 17 Oct 2018 - 15:25

score 45 · Answer 13 · 2018-10-17 15:45:15

45

Views

If $|f(z)-w|<|w|/2$ how do you conclude $|f(z)|>|w|/2$? $z$ and non-zero $w$ are complex numbers.

Published on 17 Oct 2018 - 15:45

score 147 · Answer 14 · 2026-03-28 11:35:24

147

Views

Show $\frac{df}{dz}=\frac{\hat{r}\bullet\nabla f}{e^{j\phi}}$ . Where $z$ is a complex number and $f$ is differentiable at z.

Published on 28 Mar 2026 - 11:35

score 59 · Answer 15 · 2018-10-17 17:33:40

59

Views

How to solve $2z^5 + z^4 -6z^2 + z + 1 = 0$?

Published on 17 Oct 2018 - 17:33

List Question

Summation from a real number to a complex number

Does $\sqrt{i^4} = i^2$?

Determine the number of point $z \in \mathbb{C}$ such that $(2z+i\overline{z})^3=27i$

Quadratic Taylor coefficient for free by normalizing; when is second Taylor coefficient real?

Does this equation have a complex number solution?

Let $f$ be the disk $D[0, 1]$ be a holomorphic function. Show the following

Doesn't $i=-i$ from the definition $i^2=-1$?

Generalizations of the field concept to triplets of elements

Using the fifth root of unity to show the cosine equation

$\int^0_{-\pi} {i e^{2it}\sin(2t)}$ by parts?

can I use the following formula for polar coordinates as well?

Prove that $arg(z') = \frac{\pi}{2}+(\vec {BM}\;;\vec{AM}) +2k\pi$ where k is an integer.

If $|f(z)-w|<|w|/2$ how do you conclude $|f(z)|>|w|/2$? $z$ and non-zero $w$ are complex numbers.

Show $\frac{df}{dz}=\frac{\hat{r}\bullet\nabla f}{e^{j\phi}}$ . Where $z$ is a complex number and $f$ is differentiable at z.

How to solve $2z^5 + z^4 -6z^2 + z + 1 = 0$?

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