Graphing Polynomials By Roots
Author: John Maharry
Date: 1/18/2007

Click on the applet to begin. Then slide the x-values of the roots of the polynomial to see how it changes the graph. What happens when you make a double root? A tripple root?

e = -3 (slider from -5 to 5, step 0.1)
a = 4 (slider from -5 to 5, step 0.1)
b = 2 (slider from -5 to 5, step 0.1)
c = 1 (slider from -5 to 5, step 0.1)
d = -1 (slider from -5 to 5, step 0.1)
f(x) = (x - a) (x - b) (x - c) (x - d) (x - e)
X5 = Intersect(f, xAxis, 1)
X3 = Intersect(f, xAxis, 3)
X2 = Intersect(f, xAxis, 4)
X4 = Intersect(f, xAxis, 2)
X1 = Intersect(f, xAxis, 5)