Glossary · Phase 2 · Math, when you need it
Derivative
How fast something changes when you nudge its input: the slope at a point.
Try it now
Shrink h. The red secant through two points turns into the tangent, and its slope approaches f′(1) = 2.
Learn it properly
Derivatives · The slope at a point: how fast the output changes. About 30 minutes.
Other terms from the same lesson
- slope: How steep a line or curve is: how much it goes up for each step across.
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