Question

Pigeonhole principle of 81 numbers

score 61 · Answer 1 · 2026-05-15 22:57:25

61

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Pigeonhole principle of 81 numbers

Published on 15 May 2026 - 22:57

score 49 · Answer 2 · 2026-04-14 16:49:13

49

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How to show that $Re\left(\sqrt[6]{z}\right)$ is $\frac{\sqrt{2\sqrt{2} +4}}{2}?$

Published on 14 Apr 2026 - 16:49

score 102 · Answer 3 · 2026-04-17 05:22:13

102

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Prove a unique real matrix exists to denote complex numbers in the set of Cauchy–Riemann matrices

Published on 17 Apr 2026 - 5:22

score 33 · Answer 4 · 2026-04-15 18:04:34

33

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Find $\lim_{n\to \infty}e^{-i/n}z$, $z\in\mathbb{R}$

Published on 15 Apr 2026 - 18:04

score 1.3k · Answer 5 · 2026-04-14 15:45:20

1.3k

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Convergence of $\cos(nx)$ for $x\neq k \pi$

Published on 14 Apr 2026 - 15:45

score 62 · Answer 6 · 2026-04-15 09:55:45

62

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Evaluate $\prod_{k=1}^{k=2n}[1+w^k]$, when $\omega$ is a cube root of unity

Published on 15 Apr 2026 - 9:55

score 98 · Answer 7 · 2026-04-09 22:41:47

98

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Proof of equation of complex number equation of parabola

Published on 09 Apr 2026 - 22:41

score 73 · Answer 8 · 2026-04-10 06:41:32

73

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Diagonalizablity and complex conjugates linear algebra proof problem

Published on 10 Apr 2026 - 6:41

score 3.5k · Answer 9 · 2026-04-14 08:30:35

3.5k

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Write complex number in standard form. 5 cis 210 degrees

Published on 14 Apr 2026 - 8:30

score 205 · Answer 10 · 2026-04-13 15:16:09

205

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What is the use of modulus in complex number?

Published on 13 Apr 2026 - 15:16

score 112 · Answer 11 · 2026-04-14 02:55:06

112

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Maximum value of $|z-\sqrt3-i|^2$

Published on 14 Apr 2026 - 2:55

score 464 · Answer 12 · 2026-04-12 15:52:54

464

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Problem calculating the characteristic function of the exponential distribution

Published on 12 Apr 2026 - 15:52

score 133 · Answer 13 · 2026-04-16 04:32:38

133

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Prove by induction that for all $n\in\mathbb N, (\sqrt3+i)^n+(\sqrt3-i)^n=2^{n+1}\cos(\frac{n\pi}6)$

Published on 16 Apr 2026 - 4:32

score 130 · Answer 14 · 2026-04-12 00:49:23

130

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What symmetries arise among $n$ complex numbers on the unit circle if the sum of their squares is zero?

Published on 12 Apr 2026 - 0:49

score 62 · Answer 15 · 2026-04-18 10:29:50

62

Views

"Fake proof" of discrete Fourier transform of $x(n)$?

Published on 18 Apr 2026 - 10:29

List Question

Pigeonhole principle of 81 numbers

How to show that $Re\left(\sqrt[6]{z}\right)$ is $\frac{\sqrt{2\sqrt{2} +4}}{2}?$

Prove a unique real matrix exists to denote complex numbers in the set of Cauchy–Riemann matrices

Find $\lim_{n\to \infty}e^{-i/n}z$, $z\in\mathbb{R}$

Convergence of $\cos(nx)$ for $x\neq k \pi$

Evaluate $\prod_{k=1}^{k=2n}[1+w^k]$, when $\omega$ is a cube root of unity

Proof of equation of complex number equation of parabola

Diagonalizablity and complex conjugates linear algebra proof problem

Write complex number in standard form. 5 cis 210 degrees

What is the use of modulus in complex number?

Maximum value of $|z-\sqrt3-i|^2$

Problem calculating the characteristic function of the exponential distribution

Prove by induction that for all $n\in\mathbb N, (\sqrt3+i)^n+(\sqrt3-i)^n=2^{n+1}\cos(\frac{n\pi}6)$

What symmetries arise among $n$ complex numbers on the unit circle if the sum of their squares is zero?

"Fake proof" of discrete Fourier transform of $x(n)$?

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