• 2022-07-23
    用拉格朗日乘子法求点[img=81x25]1802cf01bd84c5e.png[/img]到两平面[img=56x22]1802cf01c69987d.png[/img]和[img=114x20]1802cf01cf2c5c0.png[/img]的交线的距离,可构造拉格朗日函数为 [img=552x27]1802cf01db553cd.png[/img].