Quick Math question...

<p>From Sparks' practice,


</p>

<p>If I remember correctly [-5,5) is used to denote a "closed-open" interval.</p>

<p>Is Sparks' explanation true or is it just a typo?</p>

<p>Typo (10 chars)</p>

<p>Good than. Thanks.</p>

<p>Clearly a typo</p>