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Tool: ExpoZoom
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Description: Displays graphs of y=b^x and y=x+1 with controls to vary b and zoom in on the y-intercept. Zooming in on (0,1) and adjusting b to match slopes can be used to get to the second decimal place of e. By zooming in more closely on points slightly to the right or left it is possible to get the third place.
Technology Type: Java Applet 
Author: Alan Cooper
Language: English 
Cost: Does not require payment for use

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Courses: Algebra II Exponential Functions, Definition of e