如何提取非线性方程中的系数?。
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最近想要实现对任意带非线性约束的非线性方程的极值,需要把任意已知维数的非线性方程的系数提取出来,请问有什么解决的办法吗?
例如一个简单的二元非线性方程:x+y+xy-2=0,我想要得到的是矩阵[ -2 1 1 1 ],即常数,对x求偏导数的常数部分,对y求偏导数的常数部分和对xy求导数的部分。
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