Tafura yenhamba: x² + 1

Tafura yenhamba inooneka. Pa x yakaenzana na mainasi 2, mhinduro ndi 5. Dzvanya : pa mainasi 1, ndi 2. zvakare: pa 0, ndi 1. : pa 1, ndi 2. Uye rimwezve: pa 2, ndi 5. Mitsetse mitatu inoratidzwa panguva imwe chete, uye kukosha kuzere kuri pasi pekharesa kuri kudzasi kurudyi.