Graphing Fourth Degree Polynomials
Author: John Maharry
Date: 1/20/2007

Click on the applet to begin.

Slide the values of the four zeros and see how they change the graph.

What happens when you make mulitple roots?

f(x) = (x-a) (x-b) (x-c) (x-d)

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)
D: (d, 0)
B: (b, 0)
A: (a, 0)
C: (c, 0)