Five undetermined parameters are determined by experimental data of the total energy, three second order elastic constants and the lattice constant of the crystal at o K and zero pressure.
五个待定参数用零温零压下晶体的总能、三个二阶弹性常数以及晶格常数的实验值确定。
In general, special solution of non-homogeneous linear equation of constant coefficient of the second order is obtained by the method of undetermined coefficient, but it's process is too complicated.
二阶常系数非齐次线性微分方程的特解一般都是用“待定系数”法求得的，但求解过程都比较繁琐。
In general, special solution of non-homogeneous linear equation of constant coefficient of the second order is obtained by the method of undetermined coefficient, but it's process is too complicated.
二阶常系数非齐次线性微分方程的特解一般都是用“待定系数”法求得的，但求解过程都比较繁琐。
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