Question:

So the equation will be

After this step i dont know what to do , do i divide by 3 to produce 1?

Please answer in step .Thank you

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- Jan 9th 2010, 06:38 AMmj.alawamiIndefinite integrals
Question:

So the equation will be

After this step i dont know what to do , do i divide by 3 to produce 1?

Please answer in step .Thank you - Jan 9th 2010, 06:42 AMHallsofIvy
Here's your problem! du is NOT equal to 3, du= 3

**dx**.

And from that it should be easy to see that dx= (1/3)du.

Quote:

After this step i dont know what to do , do i divide by 3 to produce 1?

Please answer in step .Thank you

**what**by 3? "Produce 1" where and how? The more**precise**you are in mathematics, the bettter. Practise being precise. - Jan 9th 2010, 06:43 AMVonNemo19
- Jan 9th 2010, 06:46 AMmj.alawami
- Jan 9th 2010, 06:49 AMProve It
- Jan 9th 2010, 06:51 AMmj.alawami
- Jan 9th 2010, 06:57 AMProve It
No.

. - Jan 9th 2010, 08:08 AMHallsofIvy
- Jan 9th 2010, 09:10 PMbhuang
substitution isn't needed in this question.

If you remember this:

if you have a derivative that is in the form: (ax+b)^n

then the integral will be: [(ax+b)^n+1] / a(n+1)

so just substitute your question into that rule. - Jan 9th 2010, 09:35 PMProve It