Java Applet

Quadratic curve is determined by 5 points



Quadratic equation of x,y

$ax^2+bxy+cy^2+dx+ey+f=0$

represents ellipse,hyperbola,parabola.
(exceptionally,2 lines,1 line,1 point etc)

If the curve doesn't pass origine,then we can suppose f=1.

Next if we specify 5 points to pass,then values of a,b,c,d,e determine. So we obtain one quadratic curve.

In this applet you can move 5 points and draw corresponding quadratic curve.

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