Káng "Pău-ŭk-siáng" gì nguòng-mā

[[File:Qfunction.png|thumb|right|200px|<math>f=y=x^2</math> gì dù-chiông]]
'''Pău-ŭk-siáng''' (拋物線) sê [[gī-hò̤]] diē-sié gì siŏh cṳ̄ng [[uòng-chŭi-kuóh-siáng]]. Găk sĕng-uăk dâi-dŏng, ciŏng nó̤h gĕ̤h chók kó̤ gì [[lô-géng]] cêu sê siŏh ciáh pău-ŭk-siáng. 

Pău-ŭk-siáng gì [[biĕu-cūng huŏng-tiàng]] ô â-dā̤ gūi ciáh:

*<math>y^2=2px \quad \left (p>0 \right)</math>(Kŭi-kāu hióng iêu);<br />
*<math>y^2=-2px \quad \left (p>0 \right)</math>(Kŭi-kāu hióng cō̤);<br />
*<math>x^2=2py \quad \left (p>0 \right)</math>(Kŭi-kāu hióng gèng);<br />
*<math>x^2=-2py \quad \left (p>0 \right)</math>(Kŭi-kāu hióng giâ).<br />

gì-dṳ̆ng, „p“ sê cūng-gău-gé̤ṳ.

[[分類:Só-hŏk]]