## Math bloopers heard in math classes

For the discussion of math. Duh.

Moderators: gmalivuk, Moderators General, Prelates

Eebster the Great
Posts: 3484
Joined: Mon Nov 10, 2008 12:58 am UTC
Location: Cleveland, Ohio

### Re: Math bloopers heard in math classes

Unakau wrote:The only "blooper" is when somebody was writing the unit for dollars per month as...

\$ per m

The class immediately erupted. The teacher told him to "get the sperm off the board."

Serious necro, but this reminds me of 11th grade when my physics C teacher was talking about something involving conservation of angular momentum and stated, " . . . but that doesn't change the r x p-ness (pronounced ar cross peeness)." It took him a long time to understand why everybody was laughing. He also once wrote "velocity of air relative to ground" on the board as vag.

But most of the bloopers came from my BC calc class (same teacher) which had the dumbest smart person I have ever met in it. He was a freshman with a slight Indian accent who called everyone and everything "dudes" and seriously could not open his mouth without saying something weird and hilarious. He was also a pathological liar. Anyway, despite acing every test, he never seemed to know what was going on. At the end of the year while we were reviewing for the AP, he blurted out the question, completely seriously, "Wait, what does d/dx mean again?"

The only thing I can think of that I actually did is somewhat embarrassing. Senior year I swear I was arithmetically impaired. One time on a multi test I twice made the mistake 1 - 1 = 1 when calculating a determinant (probably for a cross-product, not sure). Then again, I don't know if that's as bad as the kid who once wrote [imath]\sin{\frac{1}{a + b}} = \sin{1\over a} + \sin{1\over b}[/imath].

xepher
Posts: 83
Joined: Tue Mar 09, 2010 1:42 am UTC

### Re: Math bloopers heard in math classes

My current math teacher once pronounced Euler as well... Yoo-ler.

...I was thinking about being a smartass and asking if it was Euler's evil twin, but I decided not to.

mrbaggins
Posts: 1611
Joined: Tue Jan 15, 2008 3:23 am UTC
Location: Wagga, Australia

### Re: Math bloopers heard in math classes

To be fair, I still do the YOOLER pronunciation in my head, as I encountered it in reading before I ever heard it, so sort of just 'worked it out' as something like eulogy.

I never say it out loud, but it takes conscious effort...
Why is it that 4chan is either infinitely awesome, infinitely bad, or "lolwut", but never any intermediary level?

supereater14
Posts: 27
Joined: Wed Oct 06, 2010 2:33 am UTC

### Re: Math bloopers heard in math classes

In a high school geometry class:
Teacher: "what is the reason for #7 in this proof?"
student: "umm... proof?"

Code: Select all

shred -z /dev/brain

Kurushimi
Posts: 841
Joined: Thu Oct 02, 2008 12:06 am UTC

### Re: Math bloopers heard in math classes

skeptical scientist wrote:
evilbeanfiend wrote:
mathmagic wrote:
skeptical scientist wrote:You missed g-b-g-b-g, so it's 10/32. Remember, 5 choose 2 is 5*4/2=10.

Bah. I knew I was going to miss one...

the total number of permutations has got to be 25 for what is, hopefully, obvious reasons (think binary strings)

Erm, the total number of permutations of gggbb is 5 choose 2.

Actually, I'm pretty sure the total number is 5 choose 3.

letterX
Posts: 535
Joined: Fri Feb 22, 2008 4:00 am UTC
Location: Ithaca, NY

### Re: Math bloopers heard in math classes

Kurushimi wrote:
skeptical scientist wrote:
evilbeanfiend wrote:
mathmagic wrote:
skeptical scientist wrote:You missed g-b-g-b-g, so it's 10/32. Remember, 5 choose 2 is 5*4/2=10.

Bah. I knew I was going to miss one...

the total number of permutations has got to be 25 for what is, hopefully, obvious reasons (think binary strings)

Erm, the total number of permutations of gggbb is 5 choose 2.

Actually, I'm pretty sure the total number is 5 choose 3.

I really hope you're just being difficult...

snowyowl
Posts: 464
Joined: Tue Jun 23, 2009 7:36 pm UTC

### Re: Math bloopers heard in math classes

Tac-Tics wrote:Good times were had by all in our Theory of Computation class (the mathiest comp. sci. class at our school).

I first parsed that phrase as "the manliest comp. sci. class at our school". Cue visions of a hairy-chested lecturer yelling "Today, you will learn to destroy partial diferential equations WITH YOUR BARE HANDS!"

I need to sleep now.
The preceding comment is an automated response.

Eebster the Great
Posts: 3484
Joined: Mon Nov 10, 2008 12:58 am UTC
Location: Cleveland, Ohio

### Re: Math bloopers heard in math classes

snowyowl wrote:
Tac-Tics wrote:Good times were had by all in our Theory of Computation class (the mathiest comp. sci. class at our school).

I first parsed that phrase as "the manliest comp. sci. class at our school". Cue visions of a hairy-chested lecturer yelling "Today, you will learn to destroy partial diferential equations WITH YOUR BARE HANDS!"

I need to sleep now.

I would not want to have to solve partial differential equations with my bare hands.

eSOANEM
:D
Posts: 3652
Joined: Sun Apr 12, 2009 9:39 pm UTC
Location: Grantabrycge

### Re: Math bloopers heard in math classes

From one of my friends who went on to win the maths prize that year: "what's the square root of x squared again?"
my pronouns are they

Magnanimous wrote:(fuck the macrons)

GenericPseudonym
Posts: 206
Joined: Thu Nov 11, 2010 12:30 am UTC
Location: Wherever I happen to be.

### Re: Math bloopers heard in math classes

eSOANEM wrote:From one of my friends who went on to win the maths prize that year: "what's the square root of x squared again?"

Hint: It's not what you think. (Unless it is...)

Kurushimi
Posts: 841
Joined: Thu Oct 02, 2008 12:06 am UTC

### Re: Math bloopers heard in math classes

Wait, did he mean the square root of x squared or the square root of x squared?

eSOANEM
:D
Posts: 3652
Joined: Sun Apr 12, 2009 9:39 pm UTC
Location: Grantabrycge

### Re: Math bloopers heard in math classes

Kurushimi wrote:Wait, did he mean the square root of x squared or the square root of x squared?

sqrt(x^2)
my pronouns are they

Magnanimous wrote:(fuck the macrons)

Nani the man
Posts: 2
Joined: Wed Nov 24, 2010 8:23 pm UTC
Location: Portugal

### Re: Math bloopers heard in math classes

In high school:
student: teacher did you know that 1= 0,999999999(9)
techer: dont be stupid, 1 is one and 0,9999999(9) is another number.
student: ok then, take 1 and divide it be 9... now multiply it by 9...
techer: but that equals 0,99999(9)... wait... shut up!!

it was hillarious!! xD