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Mathematics 14 Online
OpenStudy (anonymous):

Need help integrating x^3/(x-2)^2.

OpenStudy (anonymous):

I started with long division and got x + 4 as the quotient and 12x - 16 as th remainder. I'm not sure if thats correct.

OpenStudy (anonymous):

Then I wrote it as the sum of the integral of each term. So like, (int) x + (int) 4 + (int)(12/(x-2)^2) - (int) (16/(x-2 )^2)

OpenStudy (anonymous):

I'm not sure if I'm doing this right so far. :(

OpenStudy (anonymous):

Please help.

OpenStudy (lalaly):

thats right, but its supposed to be 8/(x-2)^2 not 16

OpenStudy (lalaly):

and one more thing, 12/(x-2)

OpenStudy (anonymous):

I'm not sure how you got those. Are they a result of long division?

OpenStudy (anonymous):

they are the result of long division, lalaly is right.

OpenStudy (anonymous):

so you have (int) x + (int) 12/(x-2) + (int) 8/(x+2)^2 + (int) 4

OpenStudy (anonymous):

\[x^2/2+12\ln(x-2)-8/(x-2)+4x+C\]

OpenStudy (anonymous):

when integrated you get the above

OpenStudy (anonymous):

Ok. Thanks!

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