The Definition of the Derivative
The Definition of the Derivative
The gray secant line joins the fixed red point on the graph of to a movable black point on the curve. Drag the black point along the curve. The slopes of the secant lines approximate the slope of the tangent line, which is the derivative of the function at .
y=f(x)
x
External Links
External Links
Permanent Citation
Permanent Citation
Jim Swift
"The Definition of the Derivative"
http://demonstrations.wolfram.com/TheDefinitionOfTheDerivative/
Wolfram Demonstrations Project
Published: September 28, 2007