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

it said an equation involving 1 or more integrals, not an inequality involving 1 or more integrals right?

I forget, did that riemann sum question ask you to say whether your approximation was bigger or less than the actual integral?

@OneMata Yeah, for that y value, you can assume that dy/dx is 0. Because dy/dx is 0, y never changes, so y cannot change dy/dx.

Guys, guys, listen here. You are over-complicating the problem. If you take a full water bottle, and fill it with water, it’s gonna overflow. Simple as that. lol jk
In all seriousness, I think we are all just doubting ourselves too much. Best we stop worrying - I think the curve will be rather generous and most of on here probably got a 4 or 5

@sjwon3789 I think t=“just after w” would be valid, but t>w would not be. It’s really no big deal though, probably 1 point max.

@synack Oops I see what you’re saying… since t>w would mean t can be at any time oops T_T

Lol if I get a 4… I will cry… I will be the first human in the history of my school to get a non-5.

for the mc question about possible functions that represent solutions to a differential equation where it only depends on y I just created an de dy/dx=qy+k where q and k are constants, then I just solved it and plugged different values of C in, it has the form Ce^kx or something, so 1 looked like 0e^kx and ii looked like some form of e^x, so these looked like solutions.

Lol overflow question top kek

You people lol. And I’m usually hugely pessimistic. Getting one or two parts wrong doesn’t mean you get a 4.

Any sketchy ones on mcq ? I remebr a sketchy arc length one that’s it doe…

@beavergod the cone one? and also the one where you had to find integral given the two points

I just have one more question here guys, on the FRQ Calc portion, did any of you get t= 2.2 for the speed?

@beavergod I agree, that sinx related rates with K was so bs.

Ya I did they were all like 2-3 I think something like that @oblivion. For the distance traveled from 0-1 I just Did arc length and got like 1.5 I think

I remebr one question asked if it was rel max min or neither on frq I think I put neither was it the diff eq one

^I think so. I got t=something less than 1 for one of the parts. For the (a) part of that question, you just use the integral of the velocity and plug in the given value?

@beavergod yeah it was neither because it = 1

How do you do a question when it asks for the average velocity? are you supposed to take the integral of the acceleration that you just solved from 0 to 10 and * 1/10?

when people complain about possibly getting a low 4. lol what.