Official AP Calculus Thread for 2009

qntty · 05-03-2009, 02:35 PM

There was another one that got revived from 2007 so I started a new one.

Does anyone know what we need to know about differential equations for AB besides slope fields and solving by separating variables?

RFK68 · 05-03-2009, 03:30 PM

Goodness. I am so nervous for this test and haven't been studying at all because of APUSH. But I think that's all we'll be tested on for differential equations.

imgoing2college · 05-03-2009, 03:53 PM

They have some tangent line problems too.

Like, if f(x)=3x+5 whats the line tangent to F(x) at the point (0,5).

(I took AB last year, taking BC this year).

koreanxpanda · 05-03-2009, 04:32 PM

haha same here, i've been studying for apush.
have you guys taken a practice ap mc exam?
our class average was 16 right
which is not that good, because youre supposed to get atleast half right to get a 3 =/

imgoing2college · 05-03-2009, 04:36 PM

our class average was 16 right
which is not that good, because youre supposed to get atleast half right to get a 3 =/

I just got a total of 17 right on a M/C section of a BC practice exam and got a 4 on the test. I personally think free response is easier than M/C.

qntty · 05-03-2009, 05:15 PM

Does anyone have a MC questions (either AB or BC) that I could have? I self studied and haven't got a chance to look at any official questions. If so PM me.

qntty · 05-03-2009, 07:59 PM

Is there a standard for grading the free response questions? What kinds of things will get points docked, what kinds of things won't make a difference and how does partial credit get awarded?

AxeBack · 05-03-2009, 08:02 PM

Yes, collegeboard has the AP scoring guideline I believe. Check the AP Central Calc section on collegeboard.

qntty · 05-03-2009, 09:13 PM

o ya thanks

natim1 · 05-03-2009, 09:20 PM

Hey the answer to the problem is 5= 3(0) + b right? i' haven't beens tudying at all. for any of my exams. im screwed. and my first one is tomorrow in frnech. Oh putain, je suis dans la merde!
y=3x+5

An0maly · 05-03-2009, 09:22 PM

Good luck on may 6th fellas. Hope we all get 5's on our respective tests.

imgoing2college · 05-03-2009, 09:34 PM

"y=3x+5 "

yep. but don't be surprised if they throw in some trig into problems like that.

qntty · 05-04-2009, 06:47 AM

bump 10char

psp-fifa-fan · 05-04-2009, 12:01 PM

what do we need to know about parametric and inverse function? will there be some really hard questions about these two topics?
i also heard the integration problems are not that hard for AB, true?

jamesford · 05-04-2009, 12:27 PM

There's a crapload of stuff for parametric/polar/vectors you need to know.

As for inverses, know the derivatives of the arcsin arccos etc. and also
If g is the inverse of f and (a, b) is on f

g'(b) = 1/f'(a)

One more thing
f(g(x)) = x
d/dx f(g(x)) = 1
f'(g(x)) g'(x) = 1
g'(x) = 1/f'(g(x))