g(x)=1-1.527632997*x^2+0.1048151943*x^4+0.0267056735*x^6-
0.0035274139*x^8+0.0000815819*x^10+0.0000253684*x^12-0.0000026878*x^14

f(x,y)=1-0.596905*x^2-0.032157*x^4+0.018457*x^6-0.000201*x^8-
0.855639*y^2-0.302943*(x^2)*y^2+0.054630*(x^4)*y^2+
0.021499*(x^6)*y^2-0.004860*(x^8)*y^2-0.431738*y^4+
0.087452*(x^2)*y^4+0.091136*(x^4)*y^4-0.011023*(x^6)*y^4-
0.003242*(x^8)*y^4+0.087486*y^6+0.180356*(x^2)*y^6+
0.009298*(x^4)*y^6-0.031914*(x^6)*y^6+0.005042*(x^8)*y^6+
0.152662*y^8+0.060337*(x^2)*y^8-0.09631*(x^4)*y^8+
0.017439*(x^6)*y^8+0.060864*y^10-0.153737*(x^2)*y^10+
0.03769*(x^4)*y^10-0.101867*y^12+0.047570*(x^2)*y^12+0.026310*y^14