 blabber United States. May 18 2009 12:27. Posts 2404 | Profile Blog | |
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| nemY United States. May 18 2009 12:30. Posts 2130 | Profile Blog | |
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 Kyuukyuu Canada. May 18 2009 12:32. Posts 1209 | Profile |
they're all old
the six one is still pretty awesome though |
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 il0seonpurpose Korea (South). May 18 2009 12:33. Posts 5213 | Profile Blog |
| Haha, I've seen these before; these aren't real are they? |
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 naonao United States. May 18 2009 12:45. Posts 589 | Profile Blog |
| lol i've seen a math puzzle where your supposed to do what happened in the limit question to come up with the answer XD |
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 29 fps United States. May 18 2009 12:57. Posts 2339 | Profile |
| yeah, these are old. still funny, though |
| | T for 1v1, Z for 2v2, P for 3v3, R for 4v4 |
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 n.DieJokes United States. May 18 2009 13:37. Posts 742 | Profile Blog |
| Lol, I'm such a loser laughing at math jokes. I really like the 2nd pic, top left. |
| | Whoever is good. The best. Jaedong. - Gogo// Fuck Kespa |
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 Avidkeystamper United States. May 18 2009 13:48. Posts 6666 | Profile Blog | |
| щ(ﾟДﾟщ) Life keeps getting tougher and easier. Crazy Complex and Confusing.
I like to eat my poptarts with the frosting side face down so my tongue gets the full force of a big-bang of flavor. |
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 conCentrate9 United States. May 18 2009 15:09. Posts 413 | Profile Blog |
| Depending on which side you are coming from... but thats cool. |
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 AlwaysGG Taiwan. May 18 2009 15:13. Posts 748 | Profile | |
| | Believe sAviOr! ^^ | #1 HwaSin Fan | CJ & STX fighting |
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 ninjafetus United States. May 18 2009 15:37. Posts 123 | Profile |
I had a student this semester who gave an amazingly brilliant wrong answer to the following question:
Show why the vertex of f = ax^2 + bx + c must occur at x = -b / (2a)
The idea was for them to remember that a vertex was a critical point, so they would take a derivative, set it equal to zero, and solve.
Instead they wrote the quadratic formula
x = (-b ± sqrt(b^2 - 4ac) ) / (2a)
"expanded" as
x = (-b + sqrt(b^2 - 4ac) - sqrt(b^2 - 4ac) ) / (2a)
canceled the sqrt terms, and ended with x = - b / (2a).
.....
..................
I almost gave them credit for such brilliant incompetence.
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 evanthebouncy! United States. May 18 2009 17:07. Posts 8358 | Profile Blog | |
| | Life is run, it is dance, it is fast, passionate and BAM!, you dance and sing and booze while you can for now is the time and time is mine. Smile and laugh when still can for now is the time and soon you die! |
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| Railz United States. May 18 2009 17:48. Posts 1185 | Profile | |
| | Did the whole world just get a lot smaller and go whooosh?_-` Number 0ne By.Fantasy Fanatic! |
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 HeavOnEarth May 18 2009 18:46. Posts 3837 | Profile Blog |
sigh i could've done soemthing liek that on my free response on AP
but noo.
-pout- |
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 Divinek Canada. May 18 2009 19:07. Posts 1357 | Profile Blog |
| LOL that six one actually made me laugh, those are good only seen one before |
| Never attribute to malice that which can be adequately explained by stupidity.
Oh goodness me, FOX tv where do you get your sight? Can't you keep track, the puck is black. That's why the ice is white. |
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 MasterOfChaos Germany. May 18 2009 19:37. Posts 1855 | Profile Blog |
On May 18 2009 15:37 ninjafetus wrote:
Instead they wrote the quadratic formula
x = (-b ± sqrt(b^2 - 4ac) ) / (2a)
"expanded" as
x = (-b + sqrt(b^2 - 4ac) - sqrt(b^2 - 4ac) ) / (2a)
canceled the sqrt terms, and ended with x = - b / (2a).
I almost gave them credit for such brilliant incompetence.
Why incompetence? It is a viable way to arrive at the solution if you recall that the vertex is in the middle of the arms. That is similar to how I arrived at that formula several years before learning what a derivative is. |
| | Lies are news and the truth is obsolete ⋮-) |
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| klizzer May 18 2009 21:56. Posts 456 | Profile |
![[image loading]](http://roberdo.com/wp-content/uploads/2006/02/maths-problem.jpg)
Also, the expanding thing above isn't necessarily wrong, it just lacks one step of counting the average, as MoC said. |
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| ninjafetus United States. May 18 2009 22:55. Posts 123 | Profile |
On May 18 2009 19:37 MasterOfChaos wrote:
Show nested quote +On May 18 2009 15:37 ninjafetus wrote:
Instead they wrote the quadratic formula
x = (-b ± sqrt(b^2 - 4ac) ) / (2a)
"expanded" as
x = (-b + sqrt(b^2 - 4ac) - sqrt(b^2 - 4ac) ) / (2a)
canceled the sqrt terms, and ended with x = - b / (2a).
I almost gave them credit for such brilliant incompetence.
Why incompetence? It is a viable way to arrive at the solution if you recall that the vertex is in the middle of the arms. That is similar to how I arrived at that formula several years before learning what a derivative is.
It's incompetence because A ± B = A + B - B = A doesn't make sense. You're implying that B =0, always.
Yeah, there's other ways to get it (factor to vertex form), and, if we ignore the middle step, what they did will work in the specific case that the discriminant is zero, but other than that, it's just wrong. The reason I expected them to use the derivative is because 1) it was a calculus class, and 2) I had shown them the exact steps I was expecting before. If they did a legitimate factoring, I gave them full credit, of course. If they had averaged the two roots, I would have given them credit. That's not what they were thinking, I promise.Last edit: 2009-05-18 22:56:52 |
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 Musoeun Korea (South). May 19 2009 01:23. Posts 1946 | Profile Blog | |
| | Don't Shoot the Penguins. | "No no storr...this is the one thread in the history of the internet in which rickrolling is completely on topic and acceptable." - Lemonwalrus |
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 clazziquai May 19 2009 01:57. Posts 6685 | Profile Blog |
rofl, these made me laugh the first time I saw them.
They still do!
 Thanks for sharing (again) ^_^ |
| | #1 Sea.Really Fan / #1 Nesh Fan / Terran Forever~ |
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