1、[数]四次方程
...四次方程 解的唯一性 近似算法 [gap=1143] words: geocentric coordinates, Geodetic coordinates, coordinate transformation, Quartic equation, Uniqueness of solution, approximate algorithm ...
2、四次方程式
... tangental equation 切线方程 quartic equation 四次方程式 quadratic equation 二次方程式 ...
3、四次方程
...三次方程cubic equation四次方程quartic equation不等式inequation ...
ternary quartic diophantine equation三元四次Diophantine方程
quartic congruential equation次同余方程
quartic diophantine equation四次diophantine方程
quartic indeterminate equation四次不定方程
cubic and quartic equation三
nonlinear quartic equation非线性四阶方程
mathematical quartic equation四类数理方程
the quartic equation四次方