The following is the graph of f(x)
= x(x-3)(x+3)/6. The red line segment represents the tangent line to f
at the point x . One can drag x or click the animate button to see how the tangent line varies with x.
This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1998 by Key Curriculum Press, Inc. All rights reserved. Portions of this work were funded by the National Science Foundation (awards DMI 9561674 & 9623018).