- #1
matematikuvol
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Homework Statement
[tex]\alpha\frac{d}{d\alpha}[f(\alpha^ax,\alpha^by)]|_{\alpha=1}=ax\frac{\partial f}{\partial x}+by\frac{\partial f}{\partial y}[/tex]
Homework Equations
The Attempt at a Solution
Homework Statement
I'm confused. I don't know what to do here. How to differentiate left side? Thanks for your help.
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