Homework Help: Calc I 'graphical analysis' question

1. Jan 3, 2009

OrbitalPower

http://home.comcast.net/~kidicarus23/larsoncalc.png [Broken]

This is a question from Larson's calculus that I never was quite sure what exactly I'm supposed to do.

Do I graph -.001 < ((x^2 - 4)/ (x - 2) - 4) < .001

with something like when x <.001 ((x^2 - 4)/ (x - 2) - 4) and when x > .001 ((x^2 - 4)/ (x - 2) - 4) but I just get "undefined variable" errors (it does begin to graph it, though).

Do I solve abs(((x^2 - 4)/ (x - 2)) - 4) and then graph it?

Is this problem tyring to show that the delta values will be between the upper and lower bounds of | f(x) -L | < epsilon.

I'm not sure this a problem compatible with my calculator.
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

Last edited by a moderator: May 3, 2017
2. Jan 4, 2009

HallsofIvy

I don't know your "graphing facility" so I don't know what "undefined variables" you are getting but I would graph
1) y= (x^2- 4)/(x- 2)
2) y= 4- 0.01 and
3) y= 4+ 0.01

If your facility actually begins to graph it and then gives an error message, it may actually be a "divide by 0" problem at x= 2. Try graphing the three functions above with a window x= -1 to x= 2 and then again with x= 2 to x= 3