<p>TI 83+ can do the circle thing, but it will not show excluded points. The only calculator that I have found that does it is the TI-89, but I don’t know that well how it works.</p>
<p>TI 83+ can do the circle thing, but it will not show excluded points. The only calculator that I have found that does it is the TI-89, but I don’t know that well how it works.</p>