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 College Confidential Official AP Calculus Thread for 2009
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 05-03-2009, 02:35 PM #1 Junior Member   Join Date: Jan 2009 Posts: 57 Official AP Calculus Thread for 2009 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? Reply
 05-03-2009, 03:30 PM #2 Junior Member   Join Date: May 2009 Posts: 126 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. Reply
 05-03-2009, 03:53 PM #3 Member   Join Date: Feb 2009 Posts: 875 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). Reply
 05-03-2009, 04:32 PM #4 Junior Member   Join Date: Mar 2009 Posts: 98 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 =/ Reply
 05-03-2009, 04:36 PM #5 Member   Join Date: Feb 2009 Posts: 875 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. Reply
 05-03-2009, 05:15 PM #6 Junior Member   Join Date: Jan 2009 Posts: 57 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. Reply
 05-03-2009, 07:59 PM #7 Junior Member   Join Date: Jan 2009 Posts: 57 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? Reply
 05-03-2009, 08:02 PM #8 Junior Member   Join Date: Apr 2009 Location: CrazyTown Posts: 279 Yes, collegeboard has the AP scoring guideline I believe. Check the AP Central Calc section on collegeboard. Reply
 05-03-2009, 09:13 PM #9 Junior Member   Join Date: Jan 2009 Posts: 57 o ya thanks Reply
 05-03-2009, 09:20 PM #10 Member   Join Date: Jul 2008 Posts: 640 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 Reply
 05-03-2009, 09:22 PM #11 Senior Member   Join Date: Mar 2008 Posts: 2,335 Good luck on may 6th fellas. Hope we all get 5's on our respective tests. Reply
 05-03-2009, 09:34 PM #12 Member   Join Date: Feb 2009 Posts: 875 "y=3x+5 " yep. but don't be surprised if they throw in some trig into problems like that. Reply
 05-04-2009, 06:47 AM #13 Junior Member   Join Date: Jan 2009 Posts: 57 bump 10char Reply
 05-04-2009, 12:01 PM #14 Member   Join Date: Mar 2008 Posts: 661 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? Reply
 05-04-2009, 12:27 PM #15 Senior Member   Join Date: Jan 2008 Location: West Coast ---> MIT '14 Posts: 2,318 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)) Reply

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