anonymous
  • anonymous
help me to integrate
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1354504731249:dw|
anonymous
  • anonymous
We will see.
anonymous
  • anonymous
please someone help me with my problem!!!

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anonymous
  • anonymous
i would start with \[\frac{x+2}{x^2+2x+5}+\frac{1}{x^2+2x+5}\] because the first one gives way to a simple \(u\) sub the second one is a pain though
anonymous
  • anonymous
\[\int\limits_{a}^{b} (x+3) * (x^2 + 2x +5)^-1 dx\]
anonymous
  • anonymous
|dw:1354504176605:dw|
anonymous
  • anonymous
i guess not that much of a pain complete the square, solution above
anonymous
  • anonymous
|dw:1354505437528:dw| u = x+1 ; a= 2 ?
anonymous
  • anonymous
the first one, let u be the denominator, then du will be x+2dx, so this is regular integrate(1/u)du
anonymous
  • anonymous
i would make the first numerator x+1, the second numerator is 2
anonymous
  • anonymous
okay ..
anonymous
  • anonymous
from the top pls.?
anonymous
  • anonymous
|dw:1354505864451:dw| ?
anonymous
  • anonymous
|dw:1354504775593:dw|
anonymous
  • anonymous
and the other one just like above but multiplied by 2 :D
anonymous
  • anonymous
for the second one? |dw:1354506253527:dw| kinda impossibele @hieuvo
anonymous
  • anonymous
|dw:1354505287482:dw|
anonymous
  • anonymous
its unclear to me :(
anonymous
  • anonymous
|dw:1354505588414:dw|
anonymous
  • anonymous
is that what you're confused ?
anonymous
  • anonymous
okay i get it now thanks! :)
anonymous
  • anonymous
you're welcome

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