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偏导数的几何意义（图示）

2009-03-14 23:15:00| 分类：高等数学图形动画 | 标签： |举报 |字号大中小订阅

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所有图形见：数学图形目录

偏导数是图中的两条切线的斜率（见教材：同济大学《高等数学》第五版下册15页）：

以下图形显示：二元函数在一点有偏导数，但是函数在该点无极限、也不连续。

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