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View Full Version : Anybody Remeber Calculus?


Iroc-Z89
Oct 04, 2005, 8:35 PM
Yeah IM me, IROCZ1989G92... I have a midterm tommorrow and I can't remeber some stuff...

Cooper "s"
Oct 04, 2005, 8:46 PM
what stuff????

Iroc-Z89
Oct 04, 2005, 9:04 PM
basic stuff, deriatives(long hand); and the thingy where its e to the x to the 2..

Cooper "s"
Oct 04, 2005, 11:30 PM
well the basic thing is this the deriative of say x^2=2x you multiply the thing by what it is powered to and then subtract one form the power. (power is that little number up there represented here by ^2)

the dervative of e^(anything) is e^(anything) unless it has some weird things like e^(2x+3)=(e^(2x+3))x(2)

cosx=-sinx
sinx=cosx

what more?

Iroc-Z89
Oct 04, 2005, 11:44 PM
yeah I can do the derivative that way but not the long way.. Its an advanced Calculus with bus apps class

Cooper "s"
Oct 05, 2005, 12:00 AM
by the long way you min the LIM(h->0) way thing???
oh mn that sucks for you seriously.....3 years of mechanical eng. and is till ont know how that works hehehe, but its somehting like this

Lim=f(x+h)-f(x)
h

plug in your thing so lets take i dont know x^2

Lim=x(2+h)-x(2)
h
Lim bah nvm i have no idea how it works damn limits, man my bad sorry i am no more help.

Iroc-Z89
Oct 05, 2005, 12:20 AM
f '(x)= (x+delta x)^2 /delta x that bs, set H to zero even though mathematically you can't

Cooper "s"
Oct 05, 2005, 12:36 AM
oh man listen the way i figure it, its has been done already so who cares, just buy a TI-92 and it will solve that for you, or get MAPLE it does that for you and sometimes shows steps.
I say rebel, and for a strike against things like this.

Hydraulic
Oct 05, 2005, 5:16 AM
I can help you out with calc, I'm pretty good with derivatives, limits, and graphs, but I'm only mediocre when it comes to integrals. If you post examples of problems, i will hopefully be able to show you methods for solving them.

wanna koenigsegg
Oct 05, 2005, 5:24 AM
dudes, study something easier! good luck anyway.

Hydraulic
Oct 05, 2005, 5:46 AM
f '(x)= (x+delta x)^2 /delta x that bs, set H to zero even though mathematically you can't

I dont know exactly what you're talking about, but it looks like you're trying to use the form that Cooper "s" mentioned.
My guess is that you're trying to say

f '(x) =

Lim
Δx ->0

f(x+Δx) - f(x)
Δx


I just restated what Cooper said, but using your terms. Its hard because sometimes these things cant be solved mathematically, but they can be solved theoretically. Some common examples are...


Lim
θ->0

sinθ = 1
θ

and

Lim
θ->0

cosθ-1 = 0
θ


Good luck on your midterm.;)

anonymousdaddy
Oct 05, 2005, 7:15 AM
hey if u havent yet solve tha .. mail me at hungry_wanderer@hotmail.com ... i will send ya everything abt it .. i don waana waste ma writting alll abt this now if u have already done this urself http://www.sportscarforums.com/images/icons/icon6.gif