Talk:Pseudoconvex function: Difference between revisions

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Added question regarding correctness of pseudoconvex function in article
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== Wrong example of pseudoconvex function in Properties section? ==
 
I might just be stupid, but doesn't the derivative of <math>x\mapsto x + x^3</math> vanish at <math>x=0</math>, without this being a local minimum of the function? <!-- Template:Unsigned IP --><small class="autosigned">—&nbsp;Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/83.216.94.239|83.216.94.239]] ([[User talk:83.216.94.239|talk]]) 12:23, 30 June 2016 (UTC)</small> <!--Autosigned by SineBot-->