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求函数z=x2-xy+y2+9x一6y+20的极值.
求函数z=x2-xy+y2+9x一6y+20的极值.
题库
2022-08-02
76
问题
求函数z=x2-xy+y2+9x一6y+20的极值.
选项
答案
解析
联立解出驻点为(-4,1),由
且点(-4,1)处
故在点(-4,1)处函数z取得极小值-1.
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本试题收录于:
高等数学二专升本题库专升本成考分类
高等数学二专升本
专升本成考
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