Any help would be greatly appreciated.

Thanks once again.

Luis

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- Sep 21st 2006, 02:57 PMFLO21I99Still lost part 11
Any help would be greatly appreciated.

Thanks once again.

Luis - Sep 21st 2006, 03:49 PMdan
ok I read the attached...but i could not understand what you want to know...

what do you need help with???

or did you just want someone to check your work??

dan - Sep 21st 2006, 04:17 PMFLO21I99
Dan,

This is an online class I am taking; (which I would not recommend to anyone, take the class in a traditional setting) check my work, give me the anwers, it doesn't really matter. These are the only nine questions I can't answer. I just want to get them done. :mad: Call me lazy, whatever...some things just weren't meant for people to understand and I think algebra is it for me. :confused:

Thanks,

Luis - Sep 21st 2006, 04:24 PMtopsquark
- Sep 21st 2006, 05:10 PMdan
- Sep 21st 2006, 08:36 PMCaptainBlack
- Sep 21st 2006, 08:47 PMCaptainBlack
Second question (shown in attachment).

If you multiply out the factors the leading lerm is x^3. This dominates

when |x| is large. So as x-> -inf f(x) ->-inf, and as x->inf f(x)->inf.

Also f(x)=0 has three roots: 4, 0, -1. So

f(x)<0, when x<-1,

f(x)>0, when -1<x<0,

f(x)<0, when 0<x<4,

f(x)>0, when x>4

So f(x)>0 on (-1,0)U(4,inf)

RonL