<p>Thanks! I feel like I can get a 2400 now!</p>
<p>so very true</p>
<p>In all seriousness, this is actually very true.</p>
<p>I wonder what answers they provides to the test takers hahaha</p>
<p>i meant provided sorry</p>
<p>I saw a collection of this kind of thing a while back. The one that really made me laugh:</p>
<p>Expand (x+y)^3:</p>
<p>( x + y ) ^ 3</p>
<p>:)</p>
<p>No joke this is true!</p>
<p>This is also relevant and gives a good laugh: </p>
<p>[Idiotic</a> answers from exam students: Very funny stuff! | DailyCognition](<a href=“http://www.dailycognition.com/index.php/2007/05/06/idiotic-answers-from-exam-students-very-funny-stuff.html]Idiotic”>http://www.dailycognition.com/index.php/2007/05/06/idiotic-answers-from-exam-students-very-funny-stuff.html)</p>
<p>I think there’s a mistake in the first picture. There is no lim <a href=“1%20/%20x%20-%208”> x -> 8 </a>.
Since lim <a href=“1%20/%20x-8”> x -> 8+ </a> = + infinity,
while lim <a href=“1%20/%20x-8”> x -> 8-</a> = - infinity.
A two - sided limit does not exist.</p>
<p>Good joke anyway.</p>
<p>except in correcting sentences</p>
<p>I remember my teacher doing the same thing when I was taking Algebra II. I’ll go ace the SAT now.</p>
<p>Xiggi dropping gems :blessed:</p>
<p>Xiggi, what is your reading strategies? </p>
<p>I just could’t find it in anywhere. Please post it here</p>
<p>@ursawarrior</p>
<p>It is not necessarily a mistake. It depends on notation. The inf symbol can be defined to mean + or - inf. If this is the case, then the statement is actually correct as written.</p>
<p>In fact, if we are being pedantic (and why not?) even though we write that </p>
<p>lim x -> 8 of 1/(x-8)^2 = infinity</p>
<p>We would still say the limit does not exist! Not because of an issue with different signs but just because " = infinity " is a short code for " fails to exist because the quantity increases without bound".</p>
<p>If this issue shows up on an sat, I will eat a bug.</p>
<p>I suggest that everyone skip over this post.</p>
<p>Although many texts do not distinguish between an infinite limit and a limit that does not exist, I do. For example, if the limit from the left and right are both +inf (or -inf), then I would say that the limit is +inf (or -inf). I would NOT say that he limit does not exist. </p>
<p>If the limit from the left is +inf, and the limit from the right is -inf, then I would say that the limit does not exist. Now I don’t quite recall, but it may be possible to add a “point at infinity” (similar to the Reimann Sphere?) where under a modified topology this limit would certainly exist?</p>
<p>Contrast this with something like oscillatory behavior where the limit “really” doesn’t exist.</p>
<p>…and I suggest that everyone go back to the previous post.</p>
<p>Now, anyone who is listening to us is stuck in a loop. Talk about infinity… :)</p>
<p>Then nobody will ever see this post.</p>
<p>So it doesn’t matter that it provides no information!</p>
<p>And if someone can point out the logical flaw in my last post, then that person is not listening to us.</p>
<p>(I think that this post may create a liar’s paradox.)</p>