Ezigbo ọrụ na-amalite n'ihu onye ahịa ọbụlagodi ịzụta ma ghara ịkwụsị mgbe nnyefe. Iji nyere gị aka inweta ọrụ gị n'ala anyị na-enye ndụmọdụ gbasara ọrụ, chepụta usoro, na ọrụ ahụmịhe ngwaahịa gụnyere usoro ọzụzụ sistemụ, na nrụnye ngwaahịa, na inye ọrụ.

Kpọtụrụ anyị na ajụjụ ọ bụla ị nwere ike ịnwe, ndị otu ahịa Dfun ga-enwe obi ụtọ inye aka.

Dfun na ogo dị elu nke mmepụta nke squared, na-akpaghị aka, mgbanwe na teknụzụ siri ike na ike inyefe.