Application Guide

178 Graphs Application
You can define relations using ≤, <, =, >, or ≥. The inequality operator (≠) is not
supported in relation graphing.
Relation type Examples
Equations and inequalities
equivalent to y=f(x)
• y = sqrt(x)
• y-sqrt(x) = 1/2
• -2*y-sqrt(x) = 1/2
• y-sqrt(x) ≥ 1/2
• -2*y-sqrt(x) ≥ 1/2
Equations and inequalities
equivalent to x=g(y)
• x = sin(y)
• x-sin(y) = 1/2
• x-sin(y) ≥ 1/2
Polynomial equations and
inequalities
• x^2+y^2 = 5
• x^2-y^2 ≥ 1/2+y
• x
3
+y
3
-6*x*y=0
The above relations on domains
restricted by rectangles
• y=sin(x) and -2π<x≤2π
• y≤x2|y≥-2 and 0≤x≤3
• {x
2
+y
2
≤3, y≥0 and x≤0
Note: Restrictions imposed by an active Press-to-Test session may limit the types of
relations you can graph.
To Graph a Relation:
1. From the GraphEntry/Edit menu, select Relation.
2. Type an expression for the relation.
3. Press Enter to graph the relation.