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So here it is: prove that $$\lim_{n\rightarrow\infty}\frac{\sin x}{n}=6$$

Hint: algebra I students may not get the joke, but to them the proof comes easy.

Okay, so let them flow... post 'em if you got 'em [jokes, that is] .

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Gold Member
I don't get the joke.. I am a calculus student.

amcavoy
You divide the sin(x) by n to get six = 6. Wow, that is a new low for math jokes lol.

Mentor
Q: Why do computer scientists always confuse Halloween and Christmas?

A: Because 31 OCT(al) = 25 DEC(imal).

Homework Helper
One of my favorites, find:

$$\int\frac{1}{cabin}d(cabin)$$

This next one isn't a joke so much as it is a cute poem. What does it say?

$$\frac{12+144+20+3\sqrt{4}}{7}+5\times 11=9^2+0$$

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Mentor
shmoe said:
One of my favorites, find:

$$\int\frac{1}{cabin}d(cabin)$$

Houseboat! :rofl:

amcavoy
shmoe said:
One of my favorites, find:

$$\int\frac{1}{cabin}d(cabin)$$

This next one isn't a joke so much as it is a cute poem. What does it say?

$$\frac{12+144+20+3\sqrt{4}}{7}+5\times 11=9^2+0$$
Help me out here shmoe.

$$\int\frac{d\left(\text{cabin}\right)}{\text{cabin}}=\ln{\left(\text{cabin}\right)}$$

Homework Helper
Well done. Out of a typical first year calculus class, usually one or two students will shout out "log cabin", causing much groaning in the classroom. I then get to proclaim "Close, it's actually a houseboat" and get confused stares. "You forgot the C!" prompts even louder groans, a double whammy.

amcavoy
shmoe said:
Well done. Out of a typical first year calculus class, usually one or two students will shout out "log cabin", causing much groaning in the classroom. I then get to proclaim "Close, it's actually a houseboat" and get confused stares. "You forgot the C!" prompts even louder groans, a double whammy.
Nice, I like that one.

Homework Helper
I'll put the poem in white below, highlight to see clearly:

A dozen, a gross, and a score,
Plues three times the square root of four,
Divided by seven,
Plues five times eleven,
Is nine squared, and not a bit more

amcavoy
shmoe said:
I'll put the poem in white below, highlight to see clearly:

A dozen, a gross, and a score,
Plues three times the square root of four,
Divided by seven,
Plues five times eleven,
Is nine squared, and not a bit more
Keep 'em coming :rofl:

pi-r8
Q: How do you tell that a sailor used to be a mathematician?
A: Instead of saying "aye aye, captain!", he says "negative one, captain!"

bomba923
**Warning: this may sound inappropriate, and uses suggestive language !

Professor to aspiring female math student:
*"HEY! How would YOU like to integrate my natural log??"

Female math student-->says: ":yuck:!"

(:rofl: High school humor )

fourier jr
ummmm not sure how that integral makes a houseboat. i get the log cabin part though.

here's my favourite math joke:

$$\lim_{8\rightarrow9} \sqrt{8} = 3$$

Gold Member
Q: What is the difference between a mathematician and a computer scientist?

A: A mathematician and a computer scientist work side by side in the basement of a building. Every day, they go up to the second floor at 10am for coffee. One day at 10am, they are both on the first floor and leave to get their coffee. The computer scientist hops in the elevator and goes to the second floor for his coffee. The mathematician, however, gets in the elevator, goes to the basement to reduce the problem to a problem with a known solution, and then goes to the second floor for his coffee.

josh

Gold Member
simplify the expression:

$$(\frac{1}{m^{-1}})(e^1)(r^2)(\sqrt{y^2})(\frac{d}{dx}\frac{x^2}{2})(\frac{force}{acceleration})$$

Homework Helper
fourier jr said:
ummmm not sure how that integral makes a houseboat. i get the log cabin part though.

A log cabin + sea (C) = a houseboat

It is indeed a terrible joke.

This is supposedly elementary school humour but I only heard it recently (I'm not in elementary school anymore, but my sense of humour is):

Q: Why was six afraid of seven?
A: Because seven ate nine.

amcavoy
kreil said:
simplify the expression:
$$(\frac{1}{m^{-1}})(e^1)(r^2)(\sqrt{y^2})(\frac{d}{dx}\frac{x^2}{2})(\frac{force}{acceleration})$$
Merry Christmas!

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Gold Member
Wow, nice apmcavoy!

Homework Helper
Much like the ski lodge full of girls hunting for husbands and husbands hunting for girls, things aren't always quite as symmetric as they seem. --[I don't remember]

Now when Heisenberg noticed that, he was really scared. --Paul Dirac, Quoted in D MacHale, Comic Sections (Dublin 1993)

...it would be better for the true physics if there were no mathematicians on earth. -- Daniel Bernoulli, Quoted in The Mathematical Intelligencer 13 (1991).

[Upon losing the use of his right eye:] Now I will have less distraction. --Leonhard Euler, Quoted in H Eves In Mathematical Circles (Boston 1969).

I recall once saying that when I had given the same lecture several times I couldn't help feeling that they really ought to know it by now. --John E Littlewood, A Mathematician's Miscellany, 1953.

tmc
let epsilon be < 0...

Staff Emeritus
Gold Member
What's an anagram of Banach-Tarski?

Banach-Tarski Banach-Tarski

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benorin said:
I recall once saying that when I had given the same lecture several times I couldn't help feeling that they really ought to know it by now. --John E Littlewood, A Mathematician's Miscellany, 1953.

That is my fav, provided "they" means "his students".

I've seen Dirac's quote on several occasions but I don't understand what's funny with it. :grumpy:

Here's one that's pretty funnny nowdays:

"To divide a cube into two other cubes, a fourth power or in general any power whatever into two powers of the same denomination above the second is impossible, and I have assuredly found an admirable proof of this, but the margin is too narrow to contain it. -- Fermat, in the margin of his copy of Diophantus' Arithmetica"

Another:

"Napier's logarithms, by shortening the labours, doubled the life of the astronomer." --Laplace

and another...

"In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before. But in poetry, it's the exact opposite." --Dirac

Homework Helper
Love and Tensor Algebra

Come, let us hasten to a higher plane
Their indices bedecked from one to n
Commingled in an endless Markov chain!

Come, every frustrum longs to be a cone
And every vector dreams of matrices.
Hark to the gentle gradient of the breeze:
It whispers of a more ergodic zone.

In Riemann, Hilbert or in Banach space
Let superscripts and subscripts go their ways.
Our asymptotes no longer out of phase,
We shall encounter, counting, face to face.

Thou'lt tell me all the constants of thy love;
And so we two shall all love's lemmas prove,
And in our bound partition never part.

For what did Cauchy know, or Christoffel,
Or Fourier, or any Bools or Euler,
Wielding their compasses, their pens and rulers,
Of thy supernal sinusoidal spell?

Cancel me not - for what then shall remain?
Abscissas some mantissas, modules, modes,
A root or two, a torus and a node:
The inverse of my verse, a null domain.

Ellipse of bliss, converge, O lips divine!
the product o four scalars is defines!
Cyberiad draws nigh, and the skew mind
Cuts capers like a happy haversine.

I see the eigenvalue in thine eye,
I hear the tender tensor in thy sigh.
Bernoulli would have been content to die,
Had he but known such a^2 cos 2 phi!

--from "The Cyberiad" by Stanislaw Lem

devious_
Complex variables are always fun until someone loses an $i$.

Staff Emeritus
Gold Member
The number you have dialed is imaginary. Please rotate your phone 90 degrees and try again.

What do you get when you cross a tse-tse fly and a mountan climber?

Nothing! You can't cross a vector with a scalar!

Staff Emeritus
Gold Member
Oh, here's a limerick:

$$\int_1^{\sqrt[3]{3}} z^2 \, dz \cdot \cos \frac{3 \pi}{9} = \ln \sqrt[3]{e}$$

devious_
Hurkyl said:
Oh, here's a limerick:
$$\int_1^{\sqrt[3]{3}} z^2 \, dz \cdot \cos \frac{3 \pi}{9} = \ln \sqrt[3]{e}$$
Wow... :rofl:

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Hurkyl said:
Oh, here's a limerick:

$$\int_1^{\sqrt[3]{3}} z^2 \, dz \cdot \cos \frac{3 \pi}{9} = \ln \sqrt[3]{e}$$
I don't get it.

fourier jr
ya me neither. & that cabin joke is actually pretty bad now that i get it.

Homework Helper
I thought this was funny:

In his lecture, ** (some professor) formulated a theorem and said: "The proof is obvious". Then he thought for a minute, left the lecture room, returned after 15 minutes and happily concluded: "Indeed, it is obvious!"

From here

devious_
AKG said:
I don't get it.
I think it says:

The integral from 1 to the cube root of three
Of zee squared dee zee
Times the cosine of 3pi by nine
Equals the log of the cube root of e

spongebob_79
I like this one...

"Did you hear about the constipated mathmatician?"

"He had to work it out with a pencil!"

Or along similar lines...

"Did you hear about the constipated accountant?"

"He couldn't budget, so he had to use a pencil!"

tee hee:rofl:

Staff Emeritus
Gold Member
The integral from 1 to the cube root of three
Of zee squared dee zee
Times the cosine of 3pi by nine
Equals the log of the cube root of e
That works -- when I originally heard it, it was pronounced:

The integral of the square of 'z',
From one to the cube root of three,
Multiplied by cosine,
Of three pi over nine,
Is the log of the cube root of 'e'.

I think it's a little more poetic this way, but yours is good too! Actually, I fiddled with it a bit to see if I could get it a bit more rhythmic (since it seems a bit clumsy to me), but without success.