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Rates of change and the concept of derivatives

Interpret the derivative as the gradient of a tangent line of the graph of 𝑦 = 𝑓(𝑥).

mm-u2-t3-s1-d4

Interactive

Derivative = gradient of the tangent

manipulative

Drag a point along y = f(x); the tangent slope readout is exactly f′(x) at that point.

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