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Study/DL/吴恩达深度学习课程/矩阵求导.md
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Study/DL/吴恩达深度学习课程/矩阵求导.md
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## 概念
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标量函数:输出为标量的函数
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$$
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f(x) = x^2
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$$
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向量函数:输出为向量/矩阵/张量的函数
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$$
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f(x) =
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\left[ \begin{matrix}
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x & x^2 \\
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x^3 & x^4
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\end{matrix} \right]
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$$
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$$
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$$
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## 本质
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