Discussion:  All in Calculus 
Topic:  Calculus  Slope of tangent lines 
Related Item:  http://mathforum.org/mathtools/tool/1006/ 
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Subject:  Calculus  Slope of tangent lines 
Author:  Siham Alfred 
Date:  Oct 29 2003 
From the graph of the parabola with the red dot on the
x axis one can also ask the students to find another point on the tangent line
other than the point of tangency to estimate from the graph the slope of the
tangent line.
 
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