A) \[\log ({{x}^{2}}+4x+13)+C\]
B) \[\frac{1}{3}{{\tan }^{-1}}\left( \frac{x+2}{3} \right)+C\]
C) \[\log (2x+4)+C\]
D) \[\frac{2x+4}{{{({{x}^{2}}+4x+13)}^{2}}}+C\]
E) None of these
Correct Answer: B
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