Doing some pre-cal in my calculus 12 course (though we never did pre-cal before). For our homework, we have to fill out and graph a few functions such as f(x) = x^2 etc... But what is [x]? It's not an absolute value because there was already one example.
I suspect it's just regular f(x) = x?
I suspect it's just regular f(x) = x?
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This symbol is called the greatest integer function. It rounds down, or left, to the closest integer.
[4.6]= 4
[-4.3]=-5
On my TI calculator, it is under MATH, NUM, INT
The graph is called a step function, because it looks like steps.
From 0 up to 1, the value is zero. So closed circle at (0,0), then open at (1,0). Connecting these two points with a horizontal step.
Then closed circle at (1,1) connected to open circle at (2,1)
Then up one unit to the next step, etc.
Hoping this helps!
[4.6]= 4
[-4.3]=-5
On my TI calculator, it is under MATH, NUM, INT
The graph is called a step function, because it looks like steps.
From 0 up to 1, the value is zero. So closed circle at (0,0), then open at (1,0). Connecting these two points with a horizontal step.
Then closed circle at (1,1) connected to open circle at (2,1)
Then up one unit to the next step, etc.
Hoping this helps!
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See the reference below.