***Official AP Calculus BC Thread 2014-2015***

what’s the alternating series error???

https://www.youtube.com/watch?v=BNEULxileT8

Oh tyvm I remember this now

Did any of you memorize any sort of specific formulas (equil. triangle, semi-circle, etc) for cross-sections?

^You just plug in the area into all of those shapes. For example, if you determine the area of a region ‘R’ to be equal to 100 ft, and the cross section is a semi-circle) you would use that as a diameter, so take half of it to get the radius and then plug into the formula pi*.5r^2 (semi circle area) with limits of integration and everything of course.

do we need to know how to do trig subs?

@lovelikelawl Do you mean like integration with trigonometry or what?

GL to everybody today!

Good morning from the east coast!

@blargenshmargen I doubt many will show up on this test.

I hate my teacher. Mr. Lee is the worst. I am not prepared for the ap because I could not understand him talk all year. Time to fail. Wooooo!

My teacher is baus. Good luck everyone!

made waffles with strawberries & sausages for my 2 kiddos today who are both taking the test. GOOD LUCK TO ALL.

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Good luck to everyone writing today! :slight_smile:

so hard… will the cut-off for 5 be lower ? T T

Absolute cake. Part of an FR was just writing the first few terms from a certain easy to memorize taylor series. Seriously CB?

Wait but like…that was actually the worst thing ever? Just me? I usually do pretty well too. Low to mid A’s.

Thought it was ridiculously easy. Anyone else? :stuck_out_tongue: Are some FRQ usually the same as AB? Didn’t realize that would be the case.

Think I got 35/45 MC, and at least 35/54 FR, so hopefully a 5!

Were you supposed to separate variables on one frq? I couldn’t figure out how to algebraicly do it