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Evaluate the Improper Integral 09dx81x2\int _ { 0 } ^ { 9 } \frac { d x } { \sqrt { 81 - x ^ { 2 } } }

Question 196

Multiple Choice

Evaluate the improper integral.
- 09dx81x2\int _ { 0 } ^ { 9 } \frac { d x } { \sqrt { 81 - x ^ { 2 } } }


A) 18
B) π18\frac { \pi } { 18 }
C) 1
D) π2\frac { \pi } { 2 }

Correct Answer:

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