Exponential of logarithm

Theorem

The following formula holds: $$\exp\left( \log(z) \right)=z,$$ where $\exp$ denotes the exponential and $\log$ denotes the logarithm.

References

• 1964: Milton Abramowitz and Irene A. Stegun: Handbook of mathematical functions ... (previous) ... (next): 4.2.4