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let be the integral:
[tex]\int_1^{\infty}\int_{-\infty}^{\infty}f(x,y)dydx [/tex]
i make the change of variable xy=u y=v whose Jacobian is 1/v but then what would be the new limits?...
[tex]\int_1^{\infty}\int_{-\infty}^{\infty}f(x,y)dydx [/tex]
i make the change of variable xy=u y=v whose Jacobian is 1/v but then what would be the new limits?...