He aha tētahi atu tauira o tētahi tikanga whakaiti wā-tawhā? I runga i te pātai o mua, tuhia he horopaki kei roto te whakautu. Ka taea te 1 - 20 rerenga kōrero. Te horopaki:
Ko te whakahekenga e whakamahia nuitia ana, he whakahekenga wā-polynomial. Ko te tikanga o tēnei ko te tukanga whakaheke e tango ana i te wā taumaha. Hei tauira, ka taea te whakaiti i te raruraru o te tapawhā o tētahi tau tōpū ki te raruraru o te whakarea i ngā tau tōpū e rua. Ko te tikanga ka taea te whakamahi i tētahi hātepe papatono mō te whakarea i ngā tau tōpū e rua hei tapawhā tētahi tau tōpū. He pono, ka taea tēnei mā te hoatu i te tāuru ōrite ki ngā tāuru e rua o te hātepe whakarea. Na ka kite tatou ehara i te mea uaua ake te tapawhā i te whakarea, nā te mea ka taea te whakaiti i te tapawhā ki te whakarea.