Apotheosis

Wow, I pretty much got wrong answers for everything except #1 and #2.

JohnDoe123

This test was so easy! I finished to calculator MC in 20 minutes and took a half hour nap.

AKittka

wait which one was the trapezoid question.. and did you have to set it up into 3 equal sub intervals?

seanbow

The trapezoid question was 2b, and the intervals were unequal. This is how I did it, I dunno if it's right:

.5[(L(0)+L(1)) + 2(L(1)+L(3)) + (L(3)+L(4))]

=

.5(120+156) + (156+176) + .5(176+126)

=

621

Divide by 4 to get the average = 155.25

AKittka

yeah ok that's what i did except messed up the part that doesn't involve calculus.. dividing by 4.. will i get some credit at least for getting 621?

An0maly

Nobody knows for sure yet, but I would think so.

13579

dang... i got .025 for my dh/dt... lame

also i think i subracted 60,000 instead of adding... wow i wished i hadnt looked at this now i feel un-confident

yanks07

would you get any credit for doing ( (LRAM + RRAM) / 2 ) ???

An0maly

That would just be wrong, period O_o

nns91

Would I get partial credit it I get the answer t=3, position max left = -8 ? I forgot the -2. I realized that the last second when time was over.

TheMathProf

If you did LRAM and RRAM with uneven intervals, that actually should work for mathematical correctness. Whether you'd get credit for it when it explicitly asks for the trapezoidal rule, I don't know.

LRAM = L(0) + 2L(1) + L(3)
RRAM = L(1) + 2L(3) + L(4)
(LRAM + RRAM)/2 = [L(0) + 3L(1) + 3L(3) + L(4)]/2

Trapezoidal Rule:
[L(0) + L(1)]/2 + 2*[L(1) + L(3)]/2 + [L(3) + L(4)]/2 =
[L(0) + 3L(1) + 3L(3) + L(4)]/2

So... maybe?

nns91, I see 3 points for that question, and I'm guessing you would get 2 out of 3.

Dexter_

can anyone confirm the answer for 3a)
people are getting different things

nd110491

what score would you get if you got about 50% on FR and 70% on MC

jamesford

I think I got like .038ish....don't remember though.

jamesford

nd, you probably got a mid to high 4.