f⁢(z)=[z0]⁢f+(z-z0)⁢[z0,z1]⁢f+(z-z0)⁢(z-z1)⁢[z0,z1,z2]⁢f+⋯+(z-z0)⁢(z-z1)⁢⋯⁢(z-zn-1)⁢[z0,z1,…,zn]⁢f+Rn⁡(z).