List questions from complex-numbers

Published on 13 Apr 2026 - 8:30

303

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Sketching $|z-i|= k|z-2i|$ in Complex Plane

Published on 11 Apr 2026 - 20:51

110

Views

Argument of a complex number and negative

Published on 12 Apr 2026 - 11:52

56

Views

Clearing i on an equation

Published on 09 Apr 2026 - 22:57

34

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I can't prove that $f$ admits the real part $u$

Published on 14 Apr 2026 - 2:11

72

Views

Clarification on the Zero's of a complex polynomial

Published on 11 Apr 2026 - 2:06

3.5k

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Use DeMoivre's Theorem to prove $ \cos 5x = 16 \cos^5x - 20\cos^3x+5\cos x$

Published on 16 Apr 2026 - 18:14

44

Views

matrix multiplication question with some complex number in it

Published on 13 Apr 2026 - 12:33

23

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Is it possible to formulate a continuous partial sum of this form?

Published on 11 Apr 2026 - 12:02

345

Views

Find all complex solutions $z^{10} + 2z^5 + 2 = 0$.

Published on 15 Apr 2026 - 22:24

81

Views

What's the visualisation of just $\sin\theta$ or $\cos\theta$ in complex plane.

Published on 16 Apr 2026 - 5:53

89

Views

complex number with geometry

Published on 12 Apr 2026 - 1:13

54

Views

What's the visualization of $z=\sec\theta+i\cdot\csc\theta$ in complex-plane?

Published on 14 Apr 2026 - 2:45

35

Views

Is this set $\{(x\overline{y},|x|^2)\,;\;(x,y)\in \mathbb{C}^2,\;|y|=1\}$ convex?

Published on 16 Apr 2026 - 3:50

53

Views

How to visualise $z=\cot\theta+i\cdot\tan\theta$ in complex-plane?

Published on 10 Apr 2026 - 12:10

List Question

Residue Theorem with Fractional zeros

Sketching $|z-i|= k|z-2i|$ in Complex Plane

Argument of a complex number and negative

Clearing i on an equation

I can't prove that $f$ admits the real part $u$

Clarification on the Zero's of a complex polynomial

Use DeMoivre's Theorem to prove $ \cos 5x = 16 \cos^5x - 20\cos^3x+5\cos x$

matrix multiplication question with some complex number in it

Is it possible to formulate a continuous partial sum of this form?

Find all complex solutions $z^{10} + 2z^5 + 2 = 0$.

What's the visualisation of just $\sin\theta$ or $\cos\theta$ in complex plane.

complex number with geometry

What's the visualization of $z=\sec\theta+i\cdot\csc\theta$ in complex-plane?

Is this set $\{(x\overline{y},|x|^2)\,;\;(x,y)\in \mathbb{C}^2,\;|y|=1\}$ convex?

How to visualise $z=\cot\theta+i\cdot\tan\theta$ in complex-plane?

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