For what value does [itex]\frac{\partial F}{\partial x}[/itex] vanish?(adsbygoogle = window.adsbygoogle || []).push({});

Working is in the attached pictures, easy question just want to make sure I haven't stuffed up

Thank you =D

Mod Edit: Fixed LaTeX. Tip: leave a space between delta and whatever comes after it. If you don't, the LaTeX rendering system doesn't recognize deltaF and similar. Also, for partial derivatives, use \ partial F and \ partial x, not \ delta F and \ delta x.

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# Homework Help: Can someone check my working =D

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