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Solve the Problem f(x,y)=ln(x2+y2)x2+y2f ( x , y ) = \frac { \ln \left( x ^ { 2 } + y ^ { 2 } \right) } { x ^ { 2 } + y ^ { 2 } }

Question 311

Multiple Choice

Solve the problem.
-Integrate f(x,y) =ln(x2+y2) x2+y2f ( x , y ) = \frac { \ln \left( x ^ { 2 } + y ^ { 2 } \right) } { x ^ { 2 } + y ^ { 2 } } over the region 1x2+y241 \leq x ^ { 2 } + y ^ { 2 } \leq 4 .


A) π(ln2) 2\pi ( \ln 2 ) ^ { 2 }
B) 2π(ln2) 22 \pi ( \ln 2 ) ^ { 2 }
C) 2πln22 \pi \ln 2
D) πln2\pi \ln 2

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