Question

Amistre64 I NEED your help!!!!!

Answer 1

how can I help?

Answer 2

Well I took a screen shot of this horrible problem I can't figure out! Imagine that!!! ; )

Answer 3

i want to see the screen shot :)

Answer 4

does it have a 2 in it lol

Answer 5

they want you to do int by parts and put it in table format

Answer 6

There it is! I cannot figure out how they did that addition in the end with those stupid e's and stuff! BTW I got a 100% on my calculus exam this morning! Thanks for the help!

Answer 7

yay!!

Answer 8

the table I set up is like this... let me make a pic

Answer 9

Just so you know, two things bother me about this: the e^5x/125 and how they got the 75x^2-130x+26

Answer 10

int 'v' will of course be the e^5x

Answer 11

derive U will be 3x^2 -4x

Answer 12

wait...what's int 'v'? Speak my language! You know, the language of imbeciles!

Answer 13

integrate V

Answer 14

this is my set up so far

Answer 15

Oh, I see you mean the values for the table, right?

Answer 16

does this make sense?

Answer 17

i cant open your pdfs myin

Answer 18

that most definitely does make sense! I get that part; it's the multplying through that I don't get. Can you help>

Answer 19

I ouldn't open that attachment, either.

Answer 20

now we simply multiply from right to left; which is why i offset it to make things easier

Answer 21

:(

Answer 22

tell me how you get 75x^2! I see an x^3 come out of that!!!!!

Answer 23

after that its just simplifying if I did it right :)

Answer 24

i guess i should save my files as jpegs right?

Answer 25

jpegs come out quickly; but doesnt really matter

Answer 26

i got what they got; but like I said; I stagger my table so I dont have to fool with the diagonal multiplication

Answer 27

we can factor out a e^5x; and the bottom denoms are gonna have to be 125 to combine them; so

\[\frac{e^{5x}}{125}\] is pulled out as a factor

Answer 28

the rest is just adding up the fractions to simplify:

\[\frac{3x^2-4x}{5}*\frac{25}{25}= \frac{75x^2 -100x}{125}\]

Answer 29

\[\frac{6x-4}{25}*\frac{5}{5}=\frac{30x -20}{125}\]

Answer 30

\[75x^2 -100x -(30x-20)\]
\[75x^2 -100x -30x +20\]
\[75x^2 -130x +20\]

Answer 31

i forgot the last \(+6\) on that end lol

Answer 32

does that make sense?

Answer 33

i am trying to figure out how they get those figures, So no, it doesn;t make sense, cuz I can't do the math.

Answer 34

themath is just going back to adding and subtract fractions

Answer 35

find a common denominator and redress the fractions to match

Answer 36

\[{a\over 5}-{b\over 25}+{c\over 125}\]
needs common denominators to simplify

Answer 37

the common denom is: 125; so we redress the fractions so they are all wearing the same pants

Answer 38

\[(\frac{a}{5}*{25\over25})-({b\over 25}*{5\over5})+{c\over 125}\]

Answer 39

\[{25a \over 125} - {5b \over 125} +{6\over 125}\]

Answer 40

pull out the common \({1\over 125}\) and fill in your a,b, and c

Answer 41

well not the 'c' perse; thats just a 6 over there

Answer 42

\[\frac{e^{5x}}{125}*(25(3x^2-4x)-5(6x-4)+6)\]

Answer 43

do you see where they get it from yet?

Answer 44

Trying to get a splinter out of my sons toe, please be patient.

Answer 45

just cut the toe off :)

Answer 46

tried that..,the butter knife just wasn't sharp enough!

Answer 47

let me review your posts up there for a minute or two...the drama with 6yr olds just never ends!!!

Answer 48

used ta get splinters all the time as a carpenter; just let them fester for abt a week and they pop out like a zit :)

Answer 49

oh now that is just disgusting!!!! ; )

Answer 50

lol... used to get these nasty one from yellow pine; they tips break off under the skin.

first one I had I dint know it and it was sore for abt a week later; I finally got to meesing with it; just messaging the area and up poped the 'core' :)

Answer 51

the ones i still cringe over are the ones that get tipped off under the fingernails..... shudder

Answer 52

I still don't get that fraction thing.

Answer 53

I am looking at it in all the different posts and just cannot pull it together to make sense/1 Please help me!

Answer 54

simply put:

how do we add:

3/4 + 2/3 ?

Answer 55

you need a common denom of 12

Answer 56

right; same step in your problem; except the common is 125

Answer 57

now how do we redress the fractions to get a 12 under them?

Answer 58

OMGosh! you're amazing cuz I GET IT!!!

Answer 59

:) good

Answer 60

let me try the math to make sure I get the same answer they have and then I will come back in a sec. Is that ok?

Answer 61

doors are closing in about 10 mins ... then im off to the house for the night

Answer 62

I'll bet your kids are really really smart, right?

Answer 63

lol ..... they are ..umm.... can be :)

Answer 64

oh, you mean you'll be gone?

Answer 65

they wont let me stay in the library once the lock it up lol .... and my veranda is to far to travel to after coming to the college

Answer 66

one more thing...with the signs for these? the positive negative posiotive? Is that always the same? The sign of the first one is + then - then +

Answer 67

its alternating yes; +-+-+-+-+-+-+ ..... start with + and cycle it

Answer 68

thats a sideeffect of doing 'multiple' integration by parts

Answer 69

and the table is just a conveint way to organize 'multiple' integration by parts

Answer 70

Thank you still trying to work it, but I get the picture now. You're so kind and patient; I really don't know what I would have done here in calc without your input. My A is due to partly your great help!

Answer 71

:) thanx

Answer 72

Talk to you maybe tomorrow?

Answer 73

tomorrow should be an alnighter for me; college is closed so I go to the place with my veranda

Answer 74

Oh, fun. I remember those all-nighters in college! Course I wasn't 40 back then and could do it! : )

Answer 75

:) Gnite

Answer 76

nite.