anonymous
  • anonymous
I need some guidance...
Mathematics
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
I need some guidance...
Mathematics
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
|dw:1439211637631:dw|
anonymous
  • anonymous
on what?
anonymous
  • anonymous
What method should I use on this.

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anonymous
  • anonymous
is it like this?\[x *\cos( \frac{ x }{ 2}) *dx\]
anonymous
  • anonymous
yes
anonymous
  • anonymous
ok what do you need to find. just simplify?
anonymous
  • anonymous
sorry I am n
anonymous
  • anonymous
So I thought it would go like this |dw:1439211902444:dw| but its wrong.
Loser66
  • Loser66
Apply integral by part with let u = x dv = cos (x/2) dx du = dx v = 2 sin (x/2)
Loser66
  • Loser66
You can handle it from here, right?
anonymous
  • anonymous
THanks, I got the right answer now.

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