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Change the Cartesian Integral to an Equivalent Polar Integral, and Then

Question 419

Multiple Choice

Change the Cartesian integral to an equivalent polar integral, and then evaluate.
- 09081x2e(x2+y2) dydx\int _ { 0 } ^ { 9 } \int _ { 0 } ^ { \sqrt { 81 - x ^ { 2 } } } e ^ { - \left( x ^ { 2 } + y ^ { 2 } \right) } d y d x


A) π(1e81) 2\frac { \pi \left( 1 - e ^ { - 81 } \right) } { 2 }
B) π(1e81) 4\frac { \pi \left( 1 - \mathrm { e } ^ { - 81 } \right) } { 4 }
C) π(1+e81) 4\frac { \pi \left( 1 + \mathrm { e } ^ { - 81 } \right) } { 4 }
D) π(1+e81) 2\frac { \pi \left( 1 + \mathrm { e } ^ { - 81 } \right) } { 2 }

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