z=solve('g+(exp(-a./(r.*t))).*(10.^(x-14)).*g+(exp(-b./(r.*t))).*(10.^(2.*x-28)).*g+(exp(-c./(r.*t))).*(10.^(3.*x-42)).*g+(exp(-d./(r.*t))).*(10.^(2.*x-28)).*(g^2).*2+(exp(-e./(r.*t))).*(10.^(3.*x-42))....