First things first: Start Function Art by clicking the button below.

When you first start
Function Art, the screen will look like this.

The Function Art
program allows you to plot functions, as you can
with your graphing calculator. To graph a function, enter it
in the box
beside "f(x) =" and click the New
Function button.

Try it out.
Plot the following functions. (Note: If you have
trouble,
carefully examine the screenshots below to ensure you entered the
function properly.)

The Function Art
program requires that you enter functions in the same way as for
spreadsheets:

- You must always signify multiplication with the * symbol. For example, where you would normally write 2x + 7, in the Function Art program you must write 2*x + 7
- The way to signify an exponent is with the ^
symbol. For example, where
you would normally write 3(x - 2)
^{2}- 5, in the Function Art program you must write 3*(x-2)^2 - 5 - On some computers, you must press particular keys twice in
a row before any character appears. These keys are: * ^ ( ) +

The following table
shows functions in the form you would normally
write them, and in the form that you must use with the Function Art
program.

Normal |
Function
Art |

x
- 2 |
x
- 2 |

2x
+ 4.5 |
2*x
+ 4.5 |

3x^{2}
- 5x + 17 |
3*x^2
- 5*x
+ 17 |

1.5(x+2)^{2}
- 3 |
1.5*(x+2)^2
- 3 |

As with graphing
calculators, the
Function Art program has "window settings". The window
settings
can be changed in any of the following ways:

- Changing one of xmin, xmax, ymin, or ymax (your changes will take effect when you click the Set Limits button)
- Clicking on the Zoom In and Zoom Out buttons
- Clicking (and hold down) your left mouse button, and drawing
a box around the
region you would like to zoom in on

Unlike many graphing
calculators, the Function Art program allows you to
easily specify the domain to be plotted. This is done
by either moving the Domain
Min and Domain Max scrollbars, or
by entering
numbers
for "Domain Min" and "Domain Max".

Try it with the
function f(x) =
sin(x). Notice how changing Domain Min changes
the
smallest x value for which the function is plotted, and changing the
Domain Max changes the largest x value for which the function is
plotted.

Up until now we've
just been plotting one function. Once you
have decided which functions you would like to plot and the domain for
each of these functions, you can enter this information in the multiple
functions box.
The format for this box is:

function
; DomainMin ; DomainMax

For example, the
following functions can be used to create an
interesting design:

Function |
Domain
Minimum |
Domain
Maximum |

f(x)=-10/1*x
+ 10 |
0 |
1 |

f(x)=-9/2*x
+ 9 |
0 |
2 |

f(x)=-8/3*x
+ 8 |
0 |
3 |

f(x)=-7/4*x
+ 7 |
0 |
4 |

f(x)=-6/5*x
+ 6 |
0 |
5 |

f(x)=-5/6*x
+ 5 |
0 |
6 |

f(x)=-4/7*x
+ 4 |
0 |
7 |

f(x)=-3/8*x
+ 3 |
0 |
8 |

f(x)=-2/9*x
+ 2 |
0 |
9 |

f(x)=-1/10*x
+ 1 |
0 |
10 |

These would be entered
in the Multiple Functions box in this format:

-10/1*x
+ 10 ; 0 ; 1

-9/2*x + 9 ; 0 ; 2

-8/3*x + 8 ; 0 ; 3

-7/4*x + 7 ; 0 ; 4

-6/5*x + 6 ; 0 ; 5

-5/6*x + 5 ; 0 ; 6

-4/7*x + 4 ; 0 ; 7

-3/8*x + 3 ; 0 ; 8

-2/9*x + 2 ; 0 ; 9

-1/10*x + 1 ; 0 ; 10

-9/2*x + 9 ; 0 ; 2

-8/3*x + 8 ; 0 ; 3

-7/4*x + 7 ; 0 ; 4

-6/5*x + 6 ; 0 ; 5

-5/6*x + 5 ; 0 ; 6

-4/7*x + 4 ; 0 ; 7

-3/8*x + 3 ; 0 ; 8

-2/9*x + 2 ; 0 ; 9

-1/10*x + 1 ; 0 ; 10

When you finish, click
the Load
button.

The Function Art
program currently does not have the ability to save your list
of functions directly--you must use copy and paste instead.
To save
your functions, perform the following steps:

- Use the mouse to highlight all of your functions in the Multiple Functions Box.
- Right-click your list of functions in order to get a menu of options.
- Select the copy option.
- Open a text document using your favorite editor (for example, Notepad or Microsoft Word).
- Select Paste from the Edit menu. Your list of functions will now be in the text document.
- Save this document so you can retrieve your functions later.

Perform the
following steps to load a list of functions you saved earlier:

- Open the document containing your functions.
- Use the mouse to highlight all of the functions.
- Select Copy from the Edit menu.
- Right-click in the Multiple Functions Box of the Function Art program, and select Paste from the menu of options.
- Your functions will now be in the Multiple Functions Box.
- Click the Load
button in order to plot them.

When you are happy
with your art
work (and you have remembered to save the list of functions!) you can
create a screenshot by performing the
following steps:

- Press the Print Screen key on your keyboard (it is located immediately to the right of your F12 key). This will create a copy of the screen in your computer's memory.
- Open an image manipulation program, such as Microsoft Paint.
- Select Paste from the Edit menu.
- You will now have a copy of your screen (including the Function Art program).
- Save
this image using "Graphics Interchange Format".