问题：y=[7613.517850.918381.869142.8110813.68631.438124.949429.7910230.8110163.619737.568561.067781.827110.97];x1=[76667704814885718679770464715870528938153335292727582591];x2=[16.2216.8517.9317.2817.23171918.2216.313.3711.6210.369.839.25]回归成y=ax1^2+bx1^2+cx1+dx2+ex1*x2+f(二次曲线）regress解法：y=[7613.517850.918381.869142.8110813.68631.438124.949429.7910230.8110163.619737.568561.067781.8271...
