What do Usain Bolt and calculus have in common? Using Usain Bolt as an example of distance traveled over time, Sal shows why you need differential calculus to answer the question of how fast something is traveling at a specific time. He...

Video shows how to rewrite a differential equation as a derivative of a function and then use it to find the slope of the tangent line to a function at a given point. The tangent line is then used to estimate a future value of the...

Video lesson explaining the use of differential equations by exploring the speed at which Usain Bolt runs. Explains the difference between average speed and instantaneous speed. [9:07]