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Express the Integrand as a Sum of Partial Fractions and Evaluate

Question 308

Multiple Choice

Express the integrand as a sum of partial fractions and evaluate the integral.
- 5x2+x+36x3+9xdx\int \frac { 5 x ^ { 2 } + x + 36 } { x ^ { 3 } + 9 x } d x


A) 4lnx+12lnx2+9+13tan1(x3) +C4 \ln | x | + \frac { 1 } { 2 } \ln \left| x ^ { 2 } + 9 \right| + \frac { 1 } { 3 } \tan ^ { - 1 } \left( \frac { x } { 3 } \right) + C
B) 4lnx12lnx2+9tan1x+C4 \ln | x | - \frac { 1 } { 2 } \ln \left| x ^ { 2 } + 9 \right| - \tan ^ { - 1 } x + C
C) 4lnx+12lnx2+9+sin1(x3) +C4 \ln | x | + \frac { 1 } { 2 } \ln \left| x ^ { 2 } + 9 \right| + \sin ^ { - 1 } \left( \frac { x } { 3 } \right) + C
D) lnx+12lnx2+9+tan1(x3) +C\ln | x | + \frac { 1 } { 2 } \ln \left| x ^ { 2 } + 9 \right| + \tan ^ { - 1 } \left( \frac { x } { 3 } \right) + C

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