sihuachun的博客∂ x = f ( x ) ∂ g ( x ) ∂ x + ∂ f ( x ) ∂ x g ( x ) \frac {\partial f(x)g(x)} {\partial x} = f(x) \frac {\partial g(x)} {\partial x} + \frac {\partial f(x)} {\partial x} g(x) ∂x∂f(x)g(x)=f(x)...
小酒馆燃着灯的博客 向量矩阵求导 ∂ A ⋅ x ∂ x = A T ∂ x ⋅ A ∂ x = A ∂ A ⋅ x ∂ x T = A ∂ x ⋅ A ∂ x = A T \begin{aligned} &{\frac{\partial A\cdot x}{\partial x}}=A^{T}& \frac{\partial x\cdot A}{\partial x} & ...
斐夷所非的博客 2.3 向量对向量求导 设列向量 x \mathbf{x} x 和 y \mathbf{y} y 分别为: x = [ x 1 x 2 ⋮ x n ] , y = [ y 1 y 2 ⋮ y m ] \mathbf{x} = \begin{bmatrix} x_1 \\ x_2 \\ \vdots \\ x_n \end{bmatrix}, \quad \...