Question

how do you graph:
f(x) = 3[[x-2]]

like i have no idea what that is.........

Answer 1

its a quadratic equation it looks like you're graphing

Answer 2

it is the floor function, aka the greatest integer function

Answer 3

http://www.wolframalpha.com/input/?i=3*floor%28x-2%29

Answer 4

called a "step function" for obvious reasons.

Answer 5

so is it like every 3 i make a line

Answer 6

yes

Answer 7

OH THANKS

Answer 8

forget about the -2 and the times 3 part for a moment, the greatest integer function says take the greatest integer less than or equal to x
so [|5|] = 5 and also [|5.999|]=5

Answer 9

and
\[[\pi]=3\]
\[[-\pi]=-4\] etc

Answer 10

also note that wolfram tells you
\[3[x-2]=3[x]-6\]

Answer 11

okay im confused again...what do you mean?