<p>quick question first though.. is L 'hopital's rule on the AB exam? I just learned how to use it with limits by myself, but i don't think my class is going to cover it since we are already reviewing for the exam. </p>
<p>Anyways, does anyone want to post problems, theorems, rules, or any other AB material review to refresh our minds? </p>
<p>I guess I'll start off with a problem: </p>
<p>Find the area of the region enclosed by the lines and curves. </p>
<p>4x = (y^2 - 4) and 4x = y +16</p>
<p>Well if you graph the two equations on a graphic calculator there's no region thats enclosed. I guess you meant to say also the x-axis or something (or maybe there's another way to do it?)</p>
<p>L'hopital's rule isn't on the exam, but as told by others, it will be helpful on some of the problems.
I'll be posting a bunch of problems (that I got wrong while taking a practice test), so I guess we can use this as AB problem help??</p>
<p>L'hopital is not covered by AB, but it can be immensely helpful (forget lim x->0 sin x/x? it's just cos 0/1 = 1). As for the area between two curves, there is a region enclosed, a sideways parabola and a line. I'm not going to do the problem, but</p>
<ol>
<li>Find the points of intersection</li>
<li>Integrate the line^2 - parabola^2 with respect to y from whatever to whatever (step 1)</li>
<li>Done</li>
</ol>