Casio FXCP400 Union Plot:, y < x2, y s x +, To specify this:, Intersection Plot:, Perform this operation:, uTo overlay two inequalities

2. Configure the dialog box with the following settings.

To specify this:	Perform this operation:
Line type	Tap “Graph Plot” and then tap the desired line type.
Line color	Tap “Line Color” and then tap the desired color.

3. To apply the settings, return to the dialog box in step 2 of this procedure and then tap [OK].

Shading the Region Bounded by Two Expressions

You can shade the region bounded by two expressions by specifying [ShadeType] as the function type and then inputting the expressions in the syntax shown below.

{lower function f(x), upper function g(x)} A < x < B

Note: A < x < B can be omitted. A < x < B can be replaced with x > A or x < B.

uTo shade the region bounded by two expressions

1.Tap [Type] - [ShadeType].

2.Use the above syntax to input two x-variable expressions, specify the x-value range, and then press E.

Example: {x2 – 1, –x2+ 1} –1 < x < 1

3.Tap $ to graph.

0301 To use the draw shade dialog box to shade the region bounded by x2 – 1 and –x2+ 1

Overlaying Two Inequalities in an Intersection Plot / Union Plot

Use the following procedure to overlay two inequalities in an Intersection Plot or Union Plot, which are described below.

Intersection Plot: Only the parts of the inequalities that overlap are shaded.

Union Plot: The inequalities are overlaid as they are.

uTo overlay two inequalitiesy < x2, y s x + 1

1.Store y < x2 in line y1 and y s x + 1 in line y2.

2.On the Omenu, tap [Graph Format].

3.On the Graph Format dialog box that appears, tap the [Inequality Plot] down arrow and then select [Intersection] or [Union].

4.Tap $ to graph.

Intersection Plot Union Plot

Chapter 3: Graph & Table Application 99