Question

Can someone help me with the following integral:

Answer 1

int:sin(x)^3cos(x)
use u substitution

let u = sinx
du =cosxdx

new integral:

int:u^3du

=(1/4)u^4+C
plug back in sinx for u
sin^4(x)/4+c

Answer 2

http://integrals.wolfram.com/index.jsp?expr=sin%28x%29%5E3cos%28x%29&random=false

Answer 3

that's what it looks like in better symbol form when finished. open for any questions

Answer 4

Thank you very much. I tryied so hard and I could not find the answer. Thank you so much

Answer 5

Your welcome, glad to help.

Answer 6

any others?

Answer 7

Yeah I have problem with three. well now two

Answer 8

can you help me with them?

Answer 9

Im just learning how to integrate

Answer 10

I can try, aha but i won't promise! ;P

Answer 11

in other words i'll do my best

Answer 12

let me post the other two

Answer 13

okay

Answer 14

Can you see it?

Answer 15

no....

Answer 16

Ok let me try again

Answer 17

what about now?

Answer 18

yeah i can see it, okay this one is a little more difficult . you have to use trigonometric identities

Answer 19

Do you think you can solve it?

Answer 20

let me think for a sec

Answer 21

ok :)

Answer 22

that's kind of a difficult one, however if you want to see all the steps.. i won't do them personally but here is something you can refer to

Answer 23

http://www.wolframalpha.com/widgets/view.jsp?id=dc816cd78d306d7bda61f6facf5f17f7

Answer 24

i guess it doesn't take you to the answer i put in, so just enter cos^7(x)

Answer 25

you can click see steps for indefinite integral.

Answer 26

are you sure that there isn't a sin, in your problem? that would make it so much easier

Answer 27

Im learning calculus so it will be awsome if you show me how to integrate with sin as well.

Answer 28

well i can do my best, i wasn't really able to help with the last one really though, if the integrand has sin and cos in it, that is easier

Answer 29

I think I found a way to solve it. I need to try a little bit harder. Any question I will let you know my friend

Answer 30

sounds good! good luck