/sci/ - Science & Math

Is there something available online for Math, which is like a math version of the Feynman lectures?

> in programming class at college
>working with the dumbest two potatoes in the class.
>need to create command line calculator, basic arithmetic, logs, trig functions etc.
>they think its so genius and cool if they make it so that when you divide by zero it gives infinity
>i tell them that that's not really mathematically correct, we should just return "undefined" or "error", but they won't have any of it.

please tell me how to explain well to them how stupid this idea is.

Hi /sci/, I've always been bad at math, but infinity has always interested me...

How do I count with infinity?

will infinity + infinity have the same value as infinity * infinity?

MATHEMATICS MINDFUCKS

Post interesting links to maths related mindfucks.

a not very interesting/mindfucking example:

http://en.wikipedia.org/wiki/Hilbert's_paradox_of_the_Grand_Hotel

Well I just learned never to trust /sci/.

My original instinct had told me that in the real number field, x/infinity = 0.

/sci/ had once argued against me claiming that it is only valid to say that the limit as 1/x approaches infinity = 0.

Well, now I'm reading "Pirnciples Of Mathematical Analysis" by Rudin, and it seems to hold to my original intuition, that x/infinity does indeed equate to 0.

general discussion on infinity.