Lets say we have a function of a complex variable z , f(z).(adsbygoogle = window.adsbygoogle || []).push({});

I read that for the function to be differentiable at a point z_{0}, the CR equations are a necessary condition but not a sufficient condition.

Can someone give me an example where the CR equations hold but the function is not differentiable at that point , thus justifying that the CR equations holding true aren't sufficient test.

I am unable to visualise.

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# Cauchy Riemann Equations (basic doubt)

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