model
7
1
Y=#D*EXP(3*#A*X^2+3*#B*X+3*#C)+#E*EXP(2*#A*X^2+2*#B*X+2*#C)+#F*(#A*X^2+#B*X+#C)+#G

-1e+25 0 1e+25
-1e+25 0 1e+25
-1e+25 12 1e+25
-1e+25 0 1e+25
-1e+25 0 1e+25
-1e+25 -0.6 1e+25
-1e+25 847 1e+25