f\left(x+h\right)=\sum\limits_{i=0}^{k}{\frac{1}{i!} \mathrm{D}^if\left(x\right)\left(h,\, \ldots,\, h\right)} + \frac{1}{\left(k+1\right)!}\mathrm{D}^{k+1}f\left(x+\lambda h\right)\left(h,\, \ldots,\, h\right)