Math Is Fun Forum

Avva

Member

Registered: 2009-02-25

Posts: 41

HELP graphing fraction function

graph the following function and state its properties:

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: HELP graphing fraction function

Hi avva;

http://www.mathsisfun.com/graph/functio … =-8&ymax=8

Function has a simple pole at x = -1. Factor the denominator to see that. Domain of the function is:

(- ∞ , 1) U (1 , + ∞)

Try to get the range from this.

Last edited by bobbym (2009-10-30 11:13:17)

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Avva

Member

Registered: 2009-02-25

Posts: 41

Re: HELP graphing fraction function

Tx bobbym

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: HELP graphing fraction function

Hi Avva;

Did you figure the range?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Avva

Member

Registered: 2009-02-25

Posts: 41

Re: HELP graphing fraction function

SORRY I'd mistaken the sign preceding 1 in the numerator
my Mr solved it for me today
F(x)=x^2-x+1/(x+1)(x^2-x+1)=1/x+1
http://www.mathsisfun.com/data/function-grapher.php?func1=(x^2-x-1)/(x^3+1)&xmin=-12&xmax=12&ymin=-8&ymax=8
Domain=R-{-1}
Range=R-{0}
Decreasing in (-∞,∞)-{-1}
am very sorry for that stupid mistake i had made