<p>
</p>
<p>Its not exclusive to AP Calculus BC; its also found (and applied) on AP Calculus AB too, even though it may not be listed explictly on the AP Calculus AB curriculum found on the College Board’s website. Though, I have to say, learning it in AB does save your butt in certain situations; its a very nice rule to use and abuse. </p>
<p>The one that’s found in BC covers more in depth than AB (and previous knowledge of the basic L’Hopital Rule is a good thing to have before learning more about it).</p>
<p>My AP Calculus AB class covered L’Hopital Rule. Takes one day to learn, but it can be the key to unlocking certain limit problems that seems unsolvable.</p>