Functions

[jbauman793]

how to you graph y=[x] on the graphing calc? i've tried and i can't figure it out.

 

[Deleted member 4993]

how to you graph y=[x] on the graphing calc? i've tried and i can't figure it out.

Are you trying write absolute value function?

Then you should write (here) as y = |x|

Every calculator has their own way of inputting functions - consult your owner's manual.

 

[galactus]

I believe that's the Floor function they are talking about. I do not know if it'll graph or not on a calculator.

That's the notation normally used, [x]

Let's see:

and here it is from my Voyage 200 calculator. I turned on the Discontinuity detection and it graphed properly.

What calculator do you have?. It may not graph the floor or ceiling functions. I just typed in floor(x) and it graphed OK.

As I said, I had to turn on the discontinuity detection so it would not look like stair steps

 

[jbauman793]

but f(x)= |x| is the absolute value and thats not what i'm looking for.

i've tried doing [x] in my calculator but it comes up with an error message.

 

[mmm4444bot]

Please confirm your notation. Also, for specific help, we need to know the manufacturer and model number for the particular calculator that you use.

 

[jbauman793]

The notation is f(x)= [x]. I'm supposed to graph it then graph the reflection. every time i plug it in to y= in my calculator i get ERROR:SYNTAX.

My calculator is the TI-84 Plus from Texas Instruments if you need the number on the back it's: 1292007731_K-0308J. i don't have the user guide with me.

 

[mmm4444bot]

The notation is f(x) = [x]

This is not a confirmation for the meaning of [x]; it's only a repeat of your previous typing.

Perhaps, nobody told you what [x] is supposed to mean.

If you want to go with galactus' guess, then the floor function y = [[x]] is called int(x), in the TI-84.

You can read about the int() function on pages 70, 235, and 585 (not the PDF file's pages) in the TI-84 User Guide.

Click HERE to see a definition of the floor function. Perhaps, it will clarify something for you.

 

[galactus]

Yes, it is under MATH on the TI84