Tenglamaningikkalatomonidanhosilaolamiz: y`=x`*p+x*p`+φ`(p)*p`p=p+p`*(x+φ`(p))Bundanko’rinadiki, p`*(x+φ`(p))=0. Ko’pamanolgatengbo’lishiuchunko’paytuvchilardanbiriyokiikkisihamnolgatengbo’lishikerak.