设z=(x2+y2)xy,则=________

admin2021-08-31  2

问题 设z=(x2+y2)xy,则=________

选项

答案(x2+y2)xy[yln(x2+y2)+[*]]

解析 由z=(x2+y2)xy,得z=
[yln(x2+y2)+xy]
=(x2+y2)xy[yln(x2+y2)+]
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