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Math: conic sections; eccentricity

Math: conic sections; eccentricity

By means of four spin buttons, the user specifies the directrix, the focus and the eccentricity for a conic section; an accompanying chart updates automatically. Six additional spin buttons give the user control of the chart and three command buttons respectively initialize an ellipse, hyperbola and parabola. Click on the image, above left, for a screen capture of the interface.


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