Question

integration.. im guessing its harder than i think it is...

Answer 1

alright you f''(x) = your acceleration

Answer 2

these r easy Sptsam..all u have to do is remember the formulas

Answer 3

integration is not hard...but you have to do a lot of them for practice to get the hang of it

Answer 4

f'(x) = velocity
f(x)=s(t)

Answer 5

alright lemme try em

Answer 6

there's also no integration in this problem

Answer 7

ya.. wasnt sure bout it cuz its stuck in an integration packet

Answer 8

yes there is?

Answer 9

they are giving acceleration, you must integrate to get velocity

Answer 10

then solve velocity for t=1, and then integrate again to get s(t) in which you solve for those times

Answer 11

alright.. sorry u lost me

Answer 12

f''(x) is your acceleration function, am i right?

Answer 13

yes

Answer 14

they are giving you f''(x) = 8-6t

Answer 15

and wanting you to solve s(4)-s(2) which would s(t) would be your position function

Answer 16

k so find antiderivitive to get s(t)?

Answer 17

you have to find your velocity equation first so yes you want to integrate it once for now

Answer 18

what values do i use to define the limits

Answer 19

did you integrate it?

Answer 20

ya... i think

Answer 21

that is your v(t) now, you must solve it for v=25 at t=1

Answer 22

... lost again i got 8t-3t^2

Answer 23

and they give you v(1)=25

Answer 24

why would i use that if i could just integrate another time then plug in 2 nd 4

Answer 25

because you are missing the constant i believe, it's been a long time since i've done this

Answer 26

oh..i should review that in my book.. i think i know what ur talking about..

Answer 27

http://www.cliffsnotes.com/study_guide/Distance-Velocity-and-Acceleration.topicArticleId-39909,articleId-39902.html

Answer 28

thanks anyways!

Answer 29

look at that it explains most of the time they usually say like v(0)=something

Answer 30

thanks

Answer 31

so you should get 25=8(1)-3(1) + C

Answer 32

20 = C

Answer 33

then you integrate what you got + 20 and that will get you your position function, then plug and play

Answer 34

your answer is going to be 32

Answer 35

idk if you are still here but i could upload my work if you'd like

Answer 36

32! yay i got it!

Answer 37

haha nvm2