The Math Class Blooper Reel

[Duke87 1,070]

Most find math boring. And yet, for those of us who know what we're doing, sometimes completely wrong answers can be amusing.

Exhibit A:

Exhibit B:

Exhibit C:

Exhibit D:

Exhibit E:

Cookies go to anyone who can give the right answer to all those.

[Simen 1]

lmao, those are awesome. couldnt give a real answer to most of em so those would prolly be my answers too

...LIM?

[cityhawk 12]

Exhibit A: Expanding it would be: (a+b)(a+b)

              Solving it by the FOIL method would be: a²+2ab+b²

Exhibit B: The answer is 1 over the square root of 2

Exhibit C: IDK

Exhibit D: That's a classic 3-4-5 triangle!

Exhibit E: I'm guessing the answer would be 5?

I actually like math, so what you showed us is sort of funny.

[Duke87 1,070]

Okay, lessee here:

about exhibit A:

cityhawk has the right answer for n=2. However, that is not a general formula. Try this out:

(a+b)ⁿ=aⁿ+na^n-1b+(n(n-1)/2!)a^n-2b²+.....+nab^n-1+bⁿ

naturally, the higher n is, the more terms you have.

about exhibit B:

√(2)/2 is equal to 1/√(2). However, usually we don't like radicals in the denominator if we can avoid it. Thus, no simplification is required.

about exhibit C:

It can't be simplified.

about exhibit D:

it's 5. √(3²+4²). Simple Pythagorean Theorem.

about exhibit E:

"lim" is the notation used for "limit". The top one is infinity as stated. The bottom one is also infinity. The joke is about the infinity sign looking ike a sideways 8.

[cityhawk 12]

Well, I'm only limited to Algebra 2 here, so I had a feeling that some of them would be wrong. Looks like I got Exhibits B and D right, though. Hooray!

[amal81 3]

^ LOL thats funny way to do maths, but I think I have seen this before. may be one of those funny emails or something.

[owenluby 1]

Oh thats hillarious!

Brew-ha ha!.....Classic!

[Micah 16]

If only the professors and teachers would accept Exhibit D as an answer.

[pickled_pig 7]

Although I am only at Algebra 2 (so no, I don't understand the calculus) as well you still just have to laugh.

Sometime in April I found a series of weird geometric proofs that proved 0=1, so on... Actually, they were very persuasive.

[gurrgkud 2]

haha nice. 

wow i should know the answers, but im on break from college, so no.

[Ded 30]

Yeah. I get confused by an "X" next to a "4"... I'm lost, haha! = )

[adpbns777 0]

I love geeky jokes.  But then again I go to an engineering school.  Here are some of my favorites:

You might ben an engineer if...

You have no life - and you can PROVE it mathematically.

You laugh at jokes about math[aticians]

You have to bring a jacket with you, in the middle of summer, because there's a wind-chill factor in the lab.

When your professor asks you where your homework is, you claim to have accidentally determined its momentum so precisely, that according to Heisenberg it could be anywhere in the universe.

You'll assume that a "horse" is a "sphere" in order to make the math easier

The salesperson at Best Buy can't answer any of your questions

You have a habit of destroying things in order to see how they work.

If your IQ is bigger than your weight

There are a ton of these, but these are my favorite because I find some truth in these when I walk around campus.

[rodent1989 9]

adpbns777, where do you go to school?

[A Nonny Moose 8,261]

Just a quick try. It's been a long time.

(a+b)ⁿ = aⁿ + a^(n-1)b + a^(n-2)b² + . . . + a²b^(n-2) + ab^(n-1) + bⁿ  Whew!

SQRT(2)/2 = .206 ... something

I have forgot my trig identities needed to solve this.

(3,4,5) = good old Pythagoras, Rah, Rah, Pi!

The limit of the inverse of (x - 5) as x approaches zero does not approach infinity, it approaches the Schwartzchild limit of arithmetic.  It breaks the machine.,

One for you guys  e^iπ + 1 = 0.  What is significant about this (DeMoivre's Theorem)

[Duke87 1,070]

^^^you know, you make a good point. Neither of those limits exist. In both cases, the left hand limit is negative infinity and the right hand limit is positive infinity. But there is no overall limit. Whoever came up with that one made a booboo. Oops.

[adpbns777 0]

Originally posted by: rodent1989 adpbns777, where do you go to school?quote>

Georgia Tech

and

Duke87:  I totally didn't even notice that the limit did not exist.  Good job on catching that one!