k basically i need to know how to do the following:

lim when x approaches 1 for: (x^3-4x^2+3)/(x^2-1)

here i dont really know how to factor the numerator.

lim when x approaches -infinite. (3-10x)/(square root of(25x^2-4x+1))

here i get 3/2 as an answer but its supposed to be -3/2. its something to do with the -infinite but i dont understand.

last one:

how do i factor: (x^2)/(square root of(x^2+4)-2)

thanks for any help. really appreciated

edit: NEW QUESTION YAY!!

and a new question im going to add:

we have this equation:

(e^(-x)e^(-2x)e^(4x-x^2)

apparently this is equal to e^(x-x^3)

but i thought you were supposed to just add the exponants so it would be e^(x-x^2)
Last edited by Teh_Guitarer at Oct 28, 2007,
beats me.
how do i factor: (x^2)/(square root of(x^2+4)-2)

don't u multiply the numerator and denominator by the w/e it's called of the denominator?
Call me "Shot".

ShotRod Guitar Works

Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007

Source to everything I say about Guitars, Pedals, and Amplifiers: I make them.

UG's Best DIY PedalBoard
Quote by ECistheBest
how do i factor: (x^2)/(square root of(x^2+4)-2)

don't u multiply the numerator and denominator by the w/e it's called of the denominator?

ahhhhhhhhhh right. you're good

thanks alot man
firrst one is -5/2
when u put in one u get 0 over 0 an indeterminate form.
U can use L'Hopital's Rule and take the derivative of the top and bottom and then factor the x back in you should get (3x^2-8x)/(2x)
(3(1)^2-8(1))/(2(1))
(3-8)/2
-5/2
Guitars:
Ibanez RG4EX1
Epiphone SG w/EMG's

Amps:
Peavey Windsor Head w/ JSX Cab
MicroCube (for the sake of practice at college)

Pedals :
Fulltone Full Drive 2 Mosfet
Digitech Whammy
Dunlop Crybaby
for the first one: the numerator factors into (X^2-1)(X-3)

then you can cancel the (X-3) from the numerator with the one from the denominator

edit: the guy above me is right...i didn't think to check to see if it was indeterminate form
Quote by Stephen Colbert
Ignorance is bliss. Oedipus ruined a great sex life by asking too many questions.
Quote by Jack Off Jill
Is it odd that I get an erection every time RageAgainst... posts?

President of "Colbert Nation "
^haha hes better than me.

my calculus knowledge is from two years ago junior year.
Call me "Shot".

ShotRod Guitar Works

Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007

Source to everything I say about Guitars, Pedals, and Amplifiers: I make them.

UG's Best DIY PedalBoard
Calc BC this year and im a senior in high school
Guitars:
Ibanez RG4EX1
Epiphone SG w/EMG's

Amps:
Peavey Windsor Head w/ JSX Cab
MicroCube (for the sake of practice at college)

Pedals :
Fulltone Full Drive 2 Mosfet
Digitech Whammy
Dunlop Crybaby
i took AP calc AB junior year. and slacked off in statistics senior year.
Call me "Shot".

ShotRod Guitar Works

Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007

Source to everything I say about Guitars, Pedals, and Amplifiers: I make them.

UG's Best DIY PedalBoard
yeah stat is ****
Guitars:
Ibanez RG4EX1
Epiphone SG w/EMG's

Amps:
Peavey Windsor Head w/ JSX Cab
MicroCube (for the sake of practice at college)

Pedals :
Fulltone Full Drive 2 Mosfet
Digitech Whammy
Dunlop Crybaby
Taking AP Calc AB right now, and I have no idea...we're only doing the Chain Rule right now
Quote by Xodah
Marry me.

Quote by ..NEM..
Awesome nickname, awesome sentence under the nickname and awesome avatar. Awesome opinion too. And awesome quote. I like you.
Quote by RageAgainst...
for the first one: the numerator factors into (X^2-1)(X-3)

then you can cancel the (X-3) from the numerator with the one from the denominator

edit: the guy above me is right...i didn't think to check to see if it was indeterminate form

how did you factor the numerator? thanks
Quote by Teh_Guitarer
how did you factor the numerator? thanks
i just factored (X^3-4X+3)

i figured that (X^2-1) would be one of the factors since it was in the denominator so i started with that

it's in indeterminate form though so you need to do what the other guy said
Quote by Stephen Colbert
Ignorance is bliss. Oedipus ruined a great sex life by asking too many questions.
Quote by Jack Off Jill
Is it odd that I get an erection every time RageAgainst... posts?

President of "Colbert Nation "
Quote by g.siddarth
Taking AP Calc AB right now, and I have no idea...we're only doing the Chain Rule right now

we're doing that in physics... its so hard after taking a break with statistics for a year... i forgot everything.
Call me "Shot".

ShotRod Guitar Works

Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007

Source to everything I say about Guitars, Pedals, and Amplifiers: I make them.

UG's Best DIY PedalBoard
alright thanks. anyone know number 2? and a new question im going to add:

we have this equation:

(e^(-x)e^(-2x)e^(4x-x^2)

apparently this is equal to e^(x-x^3)

but i thought you were supposed to just add the exponants so it would be e^(x-x^2)

am i wrong?