你好,这题的划线处怎么得出的,怎么知道导函数在这点上连续?
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2022-12-21
这个题为啥要把xe^x带入原方程才能求出来呢
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2022-12-21
I
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2022-12-21
老师r(B)为啥等于1
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2022-12-21
老师,这道题怎么算啊,可以写详细一点吗,我没有相关的例题可以参考
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2022-12-21
第四个为什么是错的
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2022-12-21
I
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2022-12-21
第四个为什么是错的
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2022-12-21
这道题不会算。详细步骤写一下
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2022-12-21
第16题,怎么求得这个最小值的点就是x=0,y=…,z=…?不太懂蓝色划线的一步。xyz=0是指的边界上的点?
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2022-12-21
老师,帮忙解一下这个题,谢谢
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2022-12-21
求
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2022-12-21