a new sufficient condition of conditional extreme value 一个新的条件极值的充分条件
a new derivation and proof of the sufficient condition of conditional extreme value 关于条件极值充分条件的重新推导和证明
wenxue li put forward a sufficient condition of conditional extreme value with lagrange function, but his proof is wrong 摘要李文学用拉格朗日函数提出求条件极值的充分条件,但他的证明却是错误的。
this text derives out the sufficient condition again no using lagrange function, but direct eliminating a variable from the side condition to transform conditional extreme value into the unconditional extreme value 本文不用拉格朗日函数,而是直接通过消去一个变量将条件极值转化成无条件极值,重新推导出充分性条件。