What a derivative
actually represents —
a car's speedometer
as the example.
Then find one, step
by step, rule by rule.

Explain Calculus Derivatives With a Real Example

What d/dx means, before the notation gets in the way.

Prompt

Explain what a derivative actually represents using a real-world example — a car's speedometer works well. Then walk through finding the derivative of a simple function step by step, explaining each rule as you use it.