_:n72c6f91fdaed4b34a48071cbad9a762bxb0
<http://schema.org/description>
"For&nbsp;x&nbsp;&ne; 0, we have &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; because, as&nbsp;h&nbsp;&rarr; 0&ndash;,&nbsp;h&nbsp;is a negative number, so that &nbsp;&nbsp; Here&nbsp;f&nbsp;is not differentiable at&nbsp;x&nbsp;= 0. Thus the points of differentiability are (&ndash; &infin;, &infin;) ~ {0}.&nbsp;"
<https://www.kaysonseducation.co.in/questions/p-span-sty_1910>