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Integration / substitution

  • Thread starter Zamael88
  • Start date
  • #1
6
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Homework Statement



http://img20.imageshack.us/img20/112/41590752.jpg [Broken]

Homework Equations





The Attempt at a Solution



I have no idea how to convert the left equation into the right one.

Could someone show me how to do that?

I don't understand why the right equation should be multiplied by 1/2

It is really giving me a headache.

Thanks for reading this post.
 
Last edited by a moderator:

Answers and Replies

  • #2
djeitnstine
Gold Member
614
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substitute [tex]u=1 + \mu^2[/tex] therefore [tex]du=2 \mu d \mu[/tex] the half comes in becuase you have to solve for [tex] \mu d \mu[/tex] which is in the numerator, it becomes [tex]\frac{1}{2}du= \mu dx[/tex]

since this the HW forum you should be able to see the rest.
 
  • #3
6
0
Thank you. Now I understand. :)
 

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