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# DE coursework integration? watch

1. How do i integrate mv/(-B-kv^2) dv? m B and k are constants
2. (Original post by JordanW)
How do i integrate mv/(-B-kv^2) dv? m B and k are constants
?

well..

If m, B and K are constant values:

Think that's allowed?

_Kar.
3. (Original post by JordanW)
How do i integrate mv/(-B-kv^2) dv? m B and k are constants
If you can't see it directly, use a substitution of .
4. (Original post by Kareir)
?

well..

If m, B and K are constant values:

Think that's allowed?

_Kar.
The first step is wrong.
5. As farhan suggested, use that particular substitution and providing you are confident at integration by substitution, it should all come together quite nicely and without too much difficulty.
6. (Original post by Farhan.Hanif93)
The first step is wrong.
This is true as B is not a common factor in the denominator
7. (Original post by Farhan.Hanif93)
The first step is wrong.
haha, yeah, I noticed just like a few mins after I posted. Sorry.

_Kar.
8. I dont think substitution works :/
9. Substitution works.
10. Im struggling with this and its apparently pretty simple.
Im trying to find s using:

hence,

The integration should be between 55 and 0 but i have only just started using latex and cant seem to get it to work. I know what i have done thus far is correct.
11. As far as the latex goes, you need to put 55 in braces: {55} if you want it to all be superscripted.

As far as the integral goes, use the substitution Farhan suggested.
12. Cheers for the help guys, i think it should be:
13. (Original post by JordanW)
Cheers for the help guys, i think it should be:
That's correct.

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