• For information about inputting and editing list data using the Stat Editor, see Chapter 7.

uTo use Stat Editor to recall a LIST variable created in the work area

0240 Continuing from example 0239 , to use Stat Editor to recall list variable “test”, which was created in the work area

Using the Geometry Window

When there is a Geometry window on the display, you can drag values and expressions to the Geometry window to draw the graph or figure of the value or expression. You can also drag a figure from the Geometry window to the work area, which displays the corresponding expression or value.

uTo drag an expression from the work area to the Geometry window

0241 To input the expression x2/52 + y2/22 = 1 in the work area, and then drag it to the Geometry window

Tip: The following table shows the types of expressions you can drop into the Geometry window. When the expression is not recognized, Geometry displays it as text.

Dropping this into the Geometry window:Displays this:

Linear equation in x and y

An infinite line

 

 

Equation of circle in x and y

A circle

 

 

Equation of ellipse in x and y

An ellipse

 

 

Equation of hyperbola in x and y

A hyperbola

 

 

2-dimensional vector (2 rows × 1 column format)

A point

 

 

Equation y = f(x)

A curve

 

 

2 × n matrix, n t 3

A polygon (each column represents a vertex of the

polygon)

 

 

 

n × 2 matrix, n t 3

An open polygon

 

 

uTo drag a figure from the Geometry window to the work area

0242 To drag a point, circle, point and its image from the Geometry window to the work area

• For details about Geometry window operations, see Chapter 8.

Tip: The following shows what happens when you drag a figure from the Geometry window to the work area.

Dropping this into the work area:

Displays this:

Point

Coordinates as a vector (2 × 1 matrix)

 

 

Line

Equation of the line

 

 

Vector

An ordered pair (head of vector assuming the tail is at the

 

origin)

 

 

Circle, Arc, Ellipse, Function, or Curve

Corresponding equation

 

 

Polygon

2 × n matrix

 

 

Open Polygon (Created by Animation)

n × 2 matrix

 

 

Line Pair

Simultaneous equations for the pair

 

 

A point and its image under a transformation

Matrix expression for the transformation

 

 

Chapter 2: Main Application

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