My friend came up with the following:(adsbygoogle = window.adsbygoogle || []).push({});

[itex]2x=1 \Rightarrow \frac{d}{dx}(2x)=\frac{d}{dx}1 \Rightarrow 2=0[/itex]. Shamefully I do not see what's wrong with this reasoning!

Can someone help me? :)

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# Differentiate an equation

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