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Saturday, October 30, 2010

The Discriminant

The quadratic equation y = ax2 + bx + c, represents a parabola. Play with the sliders in the geogebra applet to see the effect of positive or negative a, b and/or c. What happens when b2 – 4ac is negative, when b2 – 4ac = 0, or when b2 – 4ac > 0?

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

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