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Solve the Problem Over the Region 0x2+y240 \leq \mathrm { x } ^ { 2 } + \mathrm { y } ^ { 2 } \leq 4

Question 119

Multiple Choice

Solve the problem.
-Integrate f(x,y) =ln(x2+y2) x2+y2\mathrm { f } ( \mathrm { x } , \mathrm { y } ) = \frac { \ln \left( \mathrm { x } ^ { 2 } + \mathrm { y } ^ { 2 } \right) } { \sqrt { \mathrm { x } ^ { 2 } + \mathrm { y } ^ { 2 } } } over the region 0x2+y240 \leq \mathrm { x } ^ { 2 } + \mathrm { y } ^ { 2 } \leq 4 .


A) 4π(2ln24 \pi ( 2 \ln 2 - 1)
B) 4π(ln24 \pi ( \ln 2 - 1)
C) 8π(ln21) 8 \pi ( \ln 2 - 1 )
D) 8π(2ln21) 8 \pi ( 2 \ln 2 - 1 )

Correct Answer:

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