# Exponential Curve

## Description

The exponential curve is defined as E^x, where E is the constant

`Limit[(1 + 1/x)^x, x -> Infinity]`

## Formula

y == E^x

## Properties

### Relation to Log

### Caustic of expontial curve

The Catacaustic of the exponential curve E^x with light rays from above and parallel to the y axes is the catenary .

The exponential curve E^x has the interesting property itself. It is the only function whose derivative is itself.