\int_0^{2\pi } {\left( {\left( {f\left( {x^2 - y^3 } \right)x, - \frac{3}
{2}f\left( {x^2 - y^3 } \right)y^2 } \right) \circ \gamma } \right)\left( t \right)\left( {3\cos t,2\sin t} \right)^\prime dt} =