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frechet_derivative_chain_rule [2013/09/15 20:13] nikolaj |
frechet_derivative_chain_rule [2013/09/15 20:15] nikolaj |
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| For functions in $f,g: \mathbb R\to\mathbb R$, this of course reads | For functions in $f,g: \mathbb R\to\mathbb R$, this of course reads | ||
| - | ^ $\frac{\partial}{\partial x}g(f(x))=\left(\frac{\partial}{\partial y}g(y)\right)_{y=f(x)}\cdot \frac{\partial}{\partial x}f(x)$ ^ | + | ^ $\frac{\partial}{\partial x}g(f(x))=g'(f(x))\cdot f'(x)$ ^ |
| === Reference === | === Reference === | ||
