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August 2, 2015

Homework Help: calculus

Posted by Anonymous on Monday, February 11, 2008 at 3:41pm.

evaluate integral or state that it is diverges

integral -oo, -2 [2/(x^2-1)] dx

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integral -oo, -2 [2/(x^2-1)] dx
Through partial fractions, I came up with lim [ln(x-1)-ln(x+1)] b, -2
b->-oo
I get (ln(3)-0)-(oo-oo)). The answer in the back of the book is ln(3). What am I doing wrong?

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