Hi,👋 we have updated the app and fixed multiple bugs. We are lacking funds, request to free user not to use Adblock. Ads are non intrusive. 😊

@mathemetica: Euler’s unifying algebra, geom...

@mathemetica
8 views Apr 28, 2026
Advertisement
1
Euler’s unifying algebra, geometry, and analysis in one picture.

e^{ix} isn’t just an exponential; it’s a particle rotating at constant angular speed, writing cos(x) + i sin(x) in real time.

One equation. Three worlds unified:
• Geometry (unit circle)
• Trigonometry (sin/cos projections)
• Analysis (complex exponentials)

The green lines? :
cos(x) = (e^{ix} + e^{-ix})/2
sin(x) = (e^{ix} - e^{-ix})/(2i)

This single diagram is why Fourier transforms, quantum mechanics, signal processing, and electrical engineering all work.
Media image
Actions
Visual Editor Carousel Maker NEW
Update Thread
What You Can Do
  • Download as PDF
  • Save to Notion
  • Export as Markdown
  • Visual Editor
  • LinkedIn & Instagram Carousel Maker
Create Free Account

Includes 7-day Premium trial

Advertisement