Integration Using Partial Fractions
Which of the following is equivalent to $$\displaystyle \int \frac{3}{x(x+1)} \, dx$$?
A
$$3 \ln |x^2 + x| + C$$
B
$$\dfrac{3}{2x+1} \ln |x^2 + x| + C$$
C
$$3 \tan^{-1} x + C$$
D
$$3 \ln \left| \dfrac{x}{x+1} \right| + C$$
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