The Calculus BC Thread (No AB'ers)

<p>My proctor messed up the directions and I put two seals around Part A. So, basically I dont have a seal that goes all the way around the middle part (I put one on the top and bottom tho)</p>

<p>Anyone have experience of this? What should we do? Will my scores be canceled?</p>

<p>The MC this year was extremely easy.
Noncalc…skipped 2-3 questions
Calc…skipped the last 2
FRQ was medium to hard in difficulty
Calculator was pretty easy…just #3 part c and d stumped me a bit
NonCalc was really easy…just #6 part d and #5 part c was a bit tough</p>

<h1>6 a-c was extremely easy.</h1>

<p>I didn’t skip any MC - is that bad?</p>

<p>I didn’t get to the last half of the last questions for either free response section. I totally skipped 3 questions, and half did 2. </p>

<p>Assuming I got all the other free response right, how good would I have to do on the multiple choice to get a 5?</p>

<p>Dude the MC was SUCH a joke.</p>

<p>…but on the Taylor series expansion FR I just couldn’t get parts b c or d :(</p>

<p>That’s probably the only thing I missed on the entire test</p>

<p>My proctor messed up the directions and I put two seals around Part A. So, basically I dont have a seal that goes all the way around the middle part (I put one on the top and bottom tho)</p>

<p>Anyone have experience of this? What should we do? Will my scores be canceled?</p>

<p>So I definitely got a 5 xP</p>

<p>I doubt that your scores will be cancelled
I mean, its just a seal…</p>

<p>but you never can tell. I would expect that it wouldn’t be THAT big of a deal</p>

<p>dude that was the easiest test ever
…i didnt even take BC, im in an AB class and i self studied BC for about 2 weeks</p>

<p>but it was def harder than past years, judging by the old mcqs and frqs my teacher gave us</p>

<p>hopefully we all got 5s!!?? haha</p>

<p>@ Qwertewq
You’d have to get approx. 150% correct</p>

<p>I think the college board is getting too carried away with this MC security</p>

<p>hey, can anyone email me how to get the answer to the separation of variables question if i give you my email in a message? it was number 4 part c that took up a whole page. im pretty sure i did most of it right but i think i made a dumbbbbb mistake.</p>

<p>join AIM chat BCmath to discuss if you want</p>

<p>i would if i knew how</p>

<p>i cant find how to join</p>

<p>@JG595116</p>

<p>That seems like a bit much. I think I wasn’t clear. When I said questions, I meant letters, not numbers. I did 4 numbers completely, and pretty confidently correctly, and 2 about halfway.</p>

<p>BC Calc exam was all good…until Part B of the Free Response…***!, I had no idea what I had to do, or I didn’t know what the hell they were asking, I left like half of it blank, holy crap when I got to that section it was like I drove off a cliff…</p>

<p>I need to know all the answers now</p>

<p>CHoose chat (in the toolbar or you can do Alt+C) and invite yourself to the chatroom named “BCmath”.</p>

<p>FRQ #3<br>
dx/dt= .8
dy/dt= 3.6-9.8t</p>

<p>y=11.4 when t= 0
a) max y?
b)t when y=0
c) total distance travel
d) angle make with the x axis when y=0</p>

<p>my solutions
a) set dy/dt=0 find critical point t=.367
max y= 11.4+ intergral(3.6-9.8t,t,0,.367)
the answer is 12.0612</p>

<p>b) dy=(3.6+9.8t)dt
y=3.6t+4.9t^2+C
11.4= 0 + C ===> C=11.4
set 0=3.6t+4.9t^2 + 11.4
t=1.936</p>

<p>c) intergral( sqrt (.8^2+(3.6-9.8t)^2),t,0,1,0.936)
12.9423 meters i have a feeling that this is wrong…lol</p>

<p>d)this is the most confusing s*** of the questions</p>

<p>this is wat i did </p>

<p>slope dy/dx= (3.6-9.8t)/.8 right?</p>

<p>==take anti derivative of x and find x when t=1.936 (remember that initial condition of x is 0, so C=0) so x=1.549 when t=1.936 (omg i just check my cal again, i found out that i put 1.938 lol stupid me)</p>

<p>==y=0 when t=1.936 from part b)</p>

<p>slope of tangent line at t=1.936 is -19.216</p>

<p>equation of tangent line is y-0= -19.216(x-1.49) </p>

<p>find y intercept y=28.632</p>

<p>(draw a right triagle with hyp is the tangent line)</p>

<p>tanθ = 28.632/ 1.549
θ=tan-1 (28.632/1.549)=1.52 (pi/2 is 1.57) so i think this is a good guess lol…(f collegeboard if they dont give me some points, this is the best bs i can think of)</p>

<p>anyone need #6? thats the only one beside #3 i remember…</p>