Krappy
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Homework Statement
Calculate:
\integral \frac{1}{(x^2+1)(x+1)}
Homework Equations
\integral f(x) g'(x) = f(x) g(x) - \integral f'(x) g(x) + C
The Attempt at a Solution
I've tried using both 1/(x+1) and 1/(x^2 + 1) as dv, but both end up in another integral I can't solve, one with -ln(x+1) 2x / (x^2+1)^2 and the other with -atan(x)/(x+1)^2.
I think that probably this can only be solved with the method for rational functions (with all the coefficients), but I'm not sure.