More about this Exponential Decay Calculator

A function $f(t)$ has exponential decay if it can be expressed as:

$$f(t) = A_0 e^{-kt}$$

The decay rate $k$ can be either provided, or you may need to calculate it. The initial value $A_0$ is typically provided.

There are basically two ways of giving information that you can use to compute $k$. For both ways you will need the initial value $A_0$. But that is not enough, and you will need one extra piece of information.

You can be either be provided with the corresponding half-life , OR you can be provided the value of the function at a certain future time.

For a more in depth analysis of exponential decay and its formula and properties, see this tutorial . Also you can use this exponential growth calculator for the case of exponential growth.

Also, it can be useful for you to graph