Journal of Chongqing Jiaotong University(Natural Science) ›› 1986, Vol. 5 ›› Issue (3): 195-202.
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赵辉先
赵辉先. 用二次型的性质判定多元函数的极值[J]. 重庆交通大学学报(自然科学版), 1986, 5(3): 195-202.
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