Euler's Formula/Historical Note

Historical Note on Euler's Formula

Leonhard Paul Euler famously published what is now known as Euler's Formula in $1748$.

However, it needs to be noted that Roger Cotes first introduced it in $1714$, in the form:

$\map \ln {\cos \theta + i \sin \theta} = i \theta$


Sources

  • 1983: Ian Stewart and David Tall: Complex Analysis (The Hitchhiker's Guide to the Plane) ... (previous) ... (next): $0$ The origins of complex analysis, and a modern viewpoint: $1$. The origins of complex numbers
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