vault backup: 2023-10-15 16:08:26

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2023-10-15 16:08:26 +08:00
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## 概念
标量函数:输出为标量的函数
$$
f(x) = x^2
$$
向量函数:输出为向量/矩阵/张量的函数
$$
f(x) =
\left[ \begin{matrix}
x & x^2 \\
x^3 & x^4
\end{matrix} \right]
$$
$$
$$
## 本质