# I'm Completely Lost

• Sep 12th 2007, 05:49 PM
sh33psh33p
I'm Completely Lost
Graph the following functions:
a. y = [x - 2]

Except the brackets aren't just brackets. They're rather funny-looking brackets; they look something like this:
Instead of [], they look like
╓ ╖
╙ ╜
The brackets aren't actually separated by their tops and bottoms being on different lines, but I couldn't find any alt codes/symbols that matched the exact appearance, even in Wikipedia's Table of Mathematical Symbols. How my math teacher got it on this paper is mystifying indeed... I couldn't find it in my Algebra II book, and so I've concluded that I'm completely lost.

EDIT: I didn't notice the that the spacing was messed up; I've fixed it to make my meaning clearer now.
• Sep 12th 2007, 06:21 PM
Jhevon
Quote:

Originally Posted by sh33psh33p
Graph the following functions:
a. y = [x - 2]

Except the brackets aren't just brackets. They're rather funny-looking brackets; they look something like this:
Instead of [], they look like
╓ ╖
╙ ╜
The brackets aren't actually separated by their tops and bottoms being on different lines, but I couldn't find any alt codes/symbols that matched the exact appearance, even in Wikipedia's Table of Mathematical Symbols. How my math teacher got it on this paper is mystifying indeed... I couldn't find it in my Algebra II book, and so I've concluded that I'm completely lost.

EDIT: I didn't notice the that the spacing was messed up; I've fixed it to make my meaning clearer now.

this is known as the "floor function" and it is a kind of step function in which we round down.

see here
• Sep 12th 2007, 06:22 PM
AfterShock
Quote:

Originally Posted by sh33psh33p
Graph the following functions:
a. y = [x - 2]

Except the brackets aren't just brackets. They're rather funny-looking brackets; they look something like this:
Instead of [], they look like
╓ ╖
╙ ╜
The brackets aren't actually separated by their tops and bottoms being on different lines, but I couldn't find any alt codes/symbols that matched the exact appearance, even in Wikipedia's Table of Mathematical Symbols. How my math teacher got it on this paper is mystifying indeed... I couldn't find it in my Algebra II book, and so I've concluded that I'm completely lost.

EDIT: I didn't notice the that the spacing was messed up; I've fixed it to make my meaning clearer now.

For future reference, I wouldn't advise posting a question in two different locations. TPH will get quite angry.
• Sep 12th 2007, 06:24 PM
AfterShock
Ah, floor/ceiling functions don't look that "funny"!
• Sep 12th 2007, 06:29 PM
sh33psh33p
Lol
They looked funny to me because I'd never seen them before. xD!!

Ahhh, I get it now. We didn't really study step functions; we considered them, and my textbook devotes a single paragraph to explaining them. My gratitude to you!