Up is one of the six directions of three dimensional space. In two dimensional graphs, assuming the 'up/down' direction is present, up is usually represented by 'y'. This can also hold true for three dimensional graphs, though 'z' is also occasionally used for the 'up/down' directions. 'X', however, is never used for this purpose.
In France we use any of those three for up, though it's z most of the time.
Up is one of the six directions of three dimensional space. In two dimensional graphs, assuming the 'up/down' direction is present, up is usually represented by 'y'. This can also hold true for three dimensional graphs, though 'z' is also occasionally used for the 'up/down' directions. 'X', however, is never used for this purpose.
In France we use any of those three for up, though it's z most of the time.
Yep, Z became the new Y when the world turned 3D.
Last edited by Adsolution on Mon Dec 05, 2011 12:02 pm, edited 1 time in total.
There are at least two butterfly theorems in maths. One which I found on Wikipedia and regards some weird sets drawn like a butterfly, and one I had in my school recently and involves inscribed degenerated (butterflied) quad.
stan423321 wrote:There are at least two butterfly theorems in maths. One which I found on Wikipedia and regards some weird sets drawn like a butterfly, and one I had in my school recently and involves inscribed degenerated (butterflied) quad.
No. Oh, who am I kidding. These are just two unrelated theorems called the same; what's unusual though is they cover entirely different aspects of maths - "good old" geometry on the plane and set theory. Usually the same-called theorems aren't so distinct.
Rsandee wrote:I'm nearing math Paradise, also known as ''Algebra''.
Fixed that for you.
Indeed. Compare it to the insanity known as planar geometry. The ninth circle would be "finding the simplest solution", because I and my teacher usually disagree on which solution is simpler.
Random fact: a lot of video cards contain number close to 0x5f3759df in their chips in order to speed up computation of 1/sqrt(x).