Bî-hun hong-têng-sek

Bî-hun hong-têng-sek (微分方程式) sī chi̍t-chióng pau-hâm hâm-sò͘ pún-sin kah bî-hun ê sò͘-ha̍k hong-têng-sek. Tī èng-iōng ê hong-bīn, hâm-sò͘ it-poaⁿ tāi-piáu bu̍t-lí-liōng, hâm-sò͘ ê bî-hun tāi-piáu bu̍t-lí-liōng ê piàn-hòa-lu̍t; hong-têng-sek tāi-piáu 2-ê chi-kan ê koan-hē. Tī kang-têng-ha̍k, bu̍t-lí-ha̍k, keng-chòe-ha̍k kah seng-bu̍t-ha̍k téng choē-choē si̍t-chè-ê èng-iōng siōng, bî-hun hong-têng-sek lóng sī chin tiōng-iàu-ê kak-sek.

Navier–Stokes hong-têng-sek.