CONFIG
mptype: 2;
sharpendigits: 20;
tracktype: 1;
securitymaxnorm: 1e12;
tracktolbeforeeg: 1e-6;
tracktolduringeg: 1e-7;
sharpendigits: 30;
END;
INPUT
variable_group x,y,z;
function f1;
f1=x^2-y^2*z;
function f_1_1,f_1_2,f_1_3;
f_1_1 = (4*x)/3;
f_1_2 = -(4*y*z)/3;
f_1_3 = -(2*y^2)/3;
END;

