/sci/ - Science & Math

ok, i am doing homework for real analysis, and there is one problem i cannot figure out. i need help, or hints.
show this to be true:
if x, y, z are in R, then x <= y <= z iff |x-y|+|y-z|=|x-z|

What's your college major? Do you prefer fantasy or science fiction?

Mostly harmless.

Whilst attempting to learn binary and hexadecimal, I found some neat stuff about the number 42.
>42 in binary equals 101010
>101010 has 6 digits
>4+2=6
>If 42 were a hex number, its decimal equivilant is 66
Douglas Adams is a devil worshiper!
More stuff...
>42 in hex is 2A
>If 2=2 and A=1(first letter in alphabet), then
>2A=21
>21 is drinking age
>Douglas Adams got the idea for The Hitchhikers Guide to the galaxy sitting drunk in a field
Cool huh?

Yes OP, a lot of cultists will commit suicide, a lot of survivalists will hide out in their bunkers, and a shit load of panicky, paranoid retards worldwide will run out to walmart to stock up on bottled water and canned beets.

... and on December 22nd 2012 a LOT of people will feel very fucking stupid for falling for this end of the world crap again.

The angle necessary for total internal refraction is ~42 deg. 42 appears numerous times in several religion's cannon. Bill Clinton was the 42nd President of the United states. Coincidence?