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Multivariable Calculus

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Symmetric Fractional Integrand

MVCALC-PMEDJY

Evaluate the iterated integral:

$$I=\int_1^3 \int_1^3 (\frac{x}{y}+\frac{y}{x})dxdy$$

A

$3\ln 8$

B

$8\ln 3$

C

$5\ln 4$

D

$16\ln 8$

E

$4\ln 3$