example10 := (60+21*x^2+18*x*y+75*x+10*y^2+18*y)/(76-90*x^2+11*x*y-91*x-53*y^2
+37*y)*((-44*x+67*y-72)/(2*x+4*y-84))^(1/2)*exp((-46-60*x^2-83*x*y+84*y^2+77*y
)/(8+63*x^2+27*x*y-43*x+72*y^2-64*y));