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Tool: Recognize Functions 3
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Go to: http://www.univie.ac.at/.../fun2.html#funerk3 (opens a new window)
Description: Use your knowledge of sines and cosines to match each graph with its corresponding equation. Graphs include various amplitudes, periods and phase shifts.
Technology Type: Java Applet 
Authors: Franz Embacher and Petra Oberhuemer
maths online
Language: English 
Cost: Does not require payment for use

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Courses: Trigonometry Graphs of Functions, Transforming Graphs

  riz
Comment:A nice idea. Main drawback is that the same six graphs are used each time, and it would be better if graphs and equations were randomly generated.