Euler's Formula/Mistake

Source Work

2021: Richard Earl and James Nicholson: The Concise Oxford Dictionary of Mathematics (6th ed.):

complex exponential


Mistake

*Euler's identity $\exp z = \cos z + i \sin z$ is true for all $z \in \C$, ...


Correction

The expression is incorrect.

It should read:

$\exp i z = \cos z + i \sin z$


Sources

  • 2021: Richard Earl and James Nicholson: The Concise Oxford Dictionary of Mathematics (6th ed.) ... (previous) ... (next): complex exponential