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 Find the indefinite integral by making the substitution x=3secθ\text { Find the indefinite integral by making the substitution } x = 3 \sec \theta \text {. }

Question 65

Multiple Choice

 Find the indefinite integral by making the substitution x=3secθ\text { Find the indefinite integral by making the substitution } x = 3 \sec \theta \text {. } x3x29dx\int \frac { x ^ { 3 } } { \sqrt { x ^ { 2 } - 9 } } d x


A) x29(x+9) 3+C\frac { \sqrt { x ^ { 2 } - 9 } ( x + 9 ) } { 3 } + C
B) x29(x2+18) 3+C\frac { \sqrt { x ^ { 2 } - 9 } \left( x ^ { 2 } + 18 \right) } { 3 } + C
C) x29(x2+18) 2+C\frac { \sqrt { x ^ { 2 } - 9 } \left( x ^ { 2 } + 18 \right) } { 2 } + C
D) x29(x2+9) 3+C\frac { \sqrt { x ^ { 2 } - 9 } \left( x ^ { 2 } + 9 \right) } { 3 } + C
E) x29(x+18) 3+C\frac { \sqrt { x ^ { 2 } - 9 } ( x + 18 ) } { 3 } + C

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