摘要
利用方向导数判别函数极值,这个判别法对一元及多元函数形式不变,几何意义明显,使用简便.
The mechod which discriminate the extreme value of function by directional derivative has three features: 1 It remains the same to a sinale variable function or multivariate function 2 It has clear geometric signaficance 3 It is easy to put into use.
出处
《商洛师范专科学校学报》
2002年第4期17-17,21,共2页
Journal of Shangluo Teachers College
