f=4.268x^3-4.987x^2+1.786x+2.039-2.23978在区间[0.2,0.36]的零点
2011-08-25 18:35
>> f=@(x)4.268*x.^3-4.987*x.^2+1.786*x+2.039-2.23978;
>> x=fsolve(f,[0.2 0.36])