Posted by **laila** on Tuesday, March 26, 2013 at 11:00pm.

find the following for the function f(x)=(x+5)^2(x-2)^2

a.find the x and y intercepts,

b.find the power function that the graph ressembles for large values of x c.determine the maximum number of turning points on the graph of f

d.determine the behavior of the graph of f near each x-intercept

I don't even know where to begin. please help.

- math pre calculus -
**Steve**, Wednesday, March 27, 2013 at 11:38am
surely the intercepts are easy

f(x) is a polynomial of degree 4, so for large x it just looks like x^4.

Since the graph just touches the x-axis at x=-5 and 2, It comes down from the upper left, touches at x=-5, goes back up and comes back down to touch at x=2, then heads on up to the right, it has 3 turning points.

Visit wolframalpha.com and enter

(x+5)^2(x-2)^2

to see the graph. It will help clarify the concepts, I think.

Enter

plot y=(x+5)^2(x-2)^2 and y=x^4 where -10<x<10

to see how the two graphs are similar for large x.

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