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|dw:1354504731249:dw|

We will see.

please someone help me with my problem!!!

\[\int\limits_{a}^{b} (x+3) * (x^2 + 2x +5)^-1 dx\]

|dw:1354504176605:dw|

i guess not that much of a pain
complete the square, solution above

|dw:1354505437528:dw|
u = x+1 ; a= 2 ?

the first one, let u be the denominator, then du will be x+2dx, so this is regular integrate(1/u)du

i would make the first numerator x+1, the second numerator is 2

okay ..

from the top pls.?

|dw:1354505864451:dw|
?

|dw:1354504775593:dw|

and the other one just like above but multiplied by 2 :D

|dw:1354505287482:dw|

its unclear to me :(

|dw:1354505588414:dw|

is that what you're confused ?

okay i get it now thanks! :)

you're welcome