Кто решит? Много баллов!
[tex]\[\int_0^{\sqrt 3 } {\int_0^{\sqrt 3 } {\int_0^{\sqrt 3 } {arctg\left( {\frac{{x + y + z - xyz}}{{1 - xy - yz - zx}}} \right)} dxdydz} } \][/tex]
[tex]\[\int_0^{\sqrt 3 } {\int_0^{\sqrt 3 } {\int_0^{\sqrt 3 } {arctg\left( {\frac{{x + y + z - xyz}}{{1 - xy - yz - zx}}} \right)} dxdydz} } \][/tex]
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