Question

@jim_thompson5910

More Calculus funfunfunfun.

In case you need this again: http://cyh.leeschools.net/UserContent/Documents/AP%20CalcBC%20SumAssign%2014-15.pdf

Answer 1

not funfunfunfun

Answer 2

more like \(\Large (fun)^4\)

where did we leave off?

Answer 3

Very funfunfunfun

Answer 4

Weeeeee did 28 last

Answer 5

ok so 76 is up next

Answer 6

quite a jump, but oh well

Answer 7

Yeah it jumps because 28-75 are question on the AP calc BC test and the AB test is 60% AB

Answer 8

First things first with 76 we have to take the derivative to get acceleration equation right?

Answer 9

i gotcha

Answer 10

yep

Answer 11

Would it just be -4.1sin(0.9t)?

Answer 12

you're forgetting to derive the inside

Answer 13

you multiply by the derivative of 0.9t (I'm using the chain rule)

Answer 14

What do you mean?

Answer 15

Oh

Answer 16

-4.1sin(0.9)?

Answer 17

Oh you want to use the chain rule on the inside part?

Answer 18

-4.1sin(0.9t)(0.9)

Answer 19

better

Answer 20

it should be -4.1sin(0.9t)(0.9)

Answer 21

OS is being really weird

Answer 22

for some reason, the messages are being delivered out of order?

Answer 23

I plugged in 4 but I didn't get an answer in the choices

Answer 24

I'm getting -4.1sin(0.9*4)(0.9) = 1.632900435758

Answer 25

I didnt get that lol

Answer 26

hmm well I'm in radian mode, idk if that's what mode they want?

Answer 27

Yeah it probably does

Answer 28

honestly I have no clue how to tell which mode to be in since they don't give any hints

but calculus tends to favor radians a lot more than degrees I've noticed

Answer 29

Yeah I used 1.633

Answer 30

I've even seen one calc teacher have a radian clock in his class

so it looks like C

Answer 31

I don't know how to do 77 at all lol

Answer 32

what do integrals represent visually?

Answer 33

Area under a graph

Answer 34

so what does the integral from -3 to 3 represent?

Answer 35

Area under the graph from x=-3 to x=3

Answer 36

if the curve is above the x axis, then you have positive area under the curve (like in region B)

Answer 37

when the curve is below the x axis, you have negative area (like in region A)

the negative area counter balances the positive area

Answer 38

Welp never was taught that hahaha

Answer 39

hmm interesting

Answer 40

Oh wait I just reread the problem

Answer 41

Is it -2?

(I did learn this just remembered)