f(x)=1+x+2x2f(x)=1+x+2 x^{2}f(x)=1+x+2x2
f(x)=−2x−2x2+4x3f(x)=-2 x-2 x^{2}+4 x^{3}f(x)=−2x−2x2+4x3
f(x)=x−12x2+13x3f(x)=x-\frac{1}{2} x^{2}+\frac{1}{3} x^{3}f(x)=x−21x2+31x3
f(x)=2x−2x2+83x3f(x)=2 x-2 x^{2}+\frac{8}{3} x^{3}f(x)=2x−2x2+38x3
f(x)=x−x22!+x33!f(x)=x-\frac{x^{2}}{2 !}+\frac{x^{3}}{3 !}f(x)=x−2!x2+3!x3