Question

hi I need to know how to integrate e raised to the negative x. I am confused. :S

Answer 1

hi

Answer 2

-e^(-x)

Answer 3

i can help

Answer 4

please! I am learning integration by parts and I let my dv= e^-x. and Im having trouble integrating that.

Answer 5

just go to fun math.com and ask or try online tutoring but DONT AND I REPEAT DONT USE TUTOR VISTA OR TUTOR NEXT BUT TRY GROWING STARS

Answer 6

LOST DOVE ARE YOU THERE

Answer 7

yes. but I thought someone here might answer my question :S

Answer 8

Whenever you take the derivative of e^x, it's e^x. If you take the derivative e^kx where k is a constant, the derivative is ke^kx.

Answer 9

LOST DOVE USE ONLINE TUTORING BUT PLZ DONT USE TUTOR NEXT OR TUTROR VISTA U CAN USE GROWING STARS

Answer 10

Make sure you think of e^-x as e^-1x. Each time you take the derivative, the sign will change.
That's why -e^-x will derive to e^-x

Answer 11

GREAT IDEA

Answer 12

BUT USE ONLINE TUTORING

Answer 13

When thinking of the antiderivative/integral of e^kx, the answer will be 1/k*e^kx

Answer 14

LIKE GROWING STARS

Answer 15

i'll give the funmath thing a try though (thx! :)). wait let me read dwobinkles reply.
okay but im watching this video and the guy took the derivative of it, and he got -e^-x. http://www.youtube.com/watch?v=dqaDSlYdRcs which is why I am confused.

Answer 16

WAIT

Answer 17

its on 1:55 in the video.

Answer 18

USE GROWING STARS ONLINE TUTORING

Answer 19

sassy -- again, please stop spamming. lostdove is getting help here at the moment.

Answer 20

I WAS TRYING TO HELP

Answer 21

SORRY

Answer 22

ILL JUST GO

Answer 23

I am sure they will keep the advice regarding growing stars in mind if/when it's needed; no need to repeat :)

Answer 24

ohhh i keep replying to sassy thinking shes being legit. lol I'll ignore it
.

Answer 25

Oh, I'm sure sassy is trying to help. Just trying to let you also interact with dwobwinkle who is giving a good answer to your original question.

Answer 26

google "paul's online math notes". It's a website created by a professor, it's gotten me through calculus. It's free, not a tutoring site like Sassy is saying (lots of money, unexpected results). He has his lecture notes online and explains everything taught from algebra all the way through differential equations.

Answer 27

yeah. I was having trouble keeping up with both convos.

Answer 28

K

Answer 29

SORRY I KEEP ON REPEATING

Answer 30

oh okay!! cool thanks to all for your help! :)

its okay sassy :)

Answer 31

No worries sassy :)

Answer 32

THXS GUYS

Answer 33

BYE