Growth & Decay

There are two types of exponential functions, exponential growth and exponential decay. **Exponential growth **functions start out growing slowly and then grow faster and faster. There will be a consistent fixed period during which the function will increase by a fixed proportion. **Exponential decay** functions start out decreasing quickly and then decrease slower and slower. There is a consistent fixed period during which the function will decrease by a fixed proportion.

In this book, exponential growth functions will be discussed.