Joke Of The Day: Numbers

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May 022013
 

Rubber ChickenThe teacher asked little Johnny if he knows his numbers.

“Yes,” he said. “I do. My father taught me.”

“Good. What comes after three.”

“Four,” answers the boy.

“What comes after six?” “Seven.”

“Very good,” says the teacher. “Your dad did a good job. What comes after ten?”

“A Jack.”

 

 

Mathematical Smilies

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Apr 112013
 

Mathematical Smilies

For those who don’t get it or are stuck on what these mean:

Following down the Left side column we have inverse, square, cube, sine (sign), and log.

The Right side’s a little more complicated.

The first one is “real” – when applied to a complex number – that is, one with real and imaginary (designated by some factor times “i”) parts – you take the real component only and drop the imaginary component. i.e. You drop the i’s (eyes). “Imag” (imaginary) is the converse of “real”, so that would be only the i’s.

The inverted triangle is a math operator called “grad”, and it takes the gradient of a function. When applied to a vector – and we know it’s a vector because of the cross product operator – it’s known as the “curl”.

Then finally, we have “root”.

Yeah, I know – if you have to explain it, it’s not funny.

 

 

Source…

How Big Is Infinity?

 Amusing  Comments Off on How Big Is Infinity?
Apr 012013
 

It’s time to put on your thinking caps.

Enjoy!

[youtube]http://www.youtube.com/watch?v=UPA3bwVVzGI&hd=1[/youtube]

Using the fundamentals of set theory, explore the mind-bending concept of the “infinity of infinities” — and how it led mathematicians to conclude that math itself contains unanswerable questions.