Thursday, September 29, 2011

Secant Line Visualization

This GeoGebra Visualization shows the secant line, from f(a) to f(a+h), as h goes to zero.  The slider is set up to let h go from -1 to 1.  Drag the slider from side to side to see the secant line approach the tangent as h gets close to zero.

This is a Java Applet created using GeoGebra from - it looks like you don't have Java installed, please go to

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