# General Functions and Diffusion

Before we leave this section, we just want to stress one REALLY, REALLY important concept.

**All of the graphs and functions that we have shown should be already be familiar to you from your
general math courses. **Just because they are formulated here in reference to flux, diffusion and
gradients, doesn't mean they have any special properties or rules. All the rules you have learned
about graphing and manipulation of these general equations and how those functions look on a graph
apply here. **These same equations come up over and over in biology, physics, chemistry and any
other science you take. **The more familiar they are and comfortable you get recognizing them,
the easier all this math stuff will become.

So, one more time, we're going to show you the

1) general equations (that you should recognize from your high school math classes!),

2) the specific formulation for its application to diffusion, and

3) the graph of the associated function

Fick's First Law as a function of GRADIENT |
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Fick's First Law as a function of DISTANCE |
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Fick's Second Law, or Time to Diffuse |

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