Application Guide

Tips for Graphing Relations
▶ You can quickly define a relation from the Function entry line. Position the cursor to
the immediate right of the = sign, and then press the Backspace key. A small menu
appears with the relation operators and a Relation option. Choosing from the menu
places the cursor in the Relation entry line.
▶ You can type a relation as text on a Graphs page and then drag the text object over
either axis. The relation is graphed and added to the relation history.
Warning and Error Message
Error Condition Additional Information
Relation input not supported Relation input not supported
Note: The following relation inputs are
supported:
• Relations using ≤, <, =, >, or ≥.
• Polynomial relations in x and y
• Relations equivalent to y=f(x) or x=g(y)
or corresponding inequalities
• The above relations on domains
restricted by rectangles
Domain Restrictions not supported
for certain classes of relations
equivalent to y=f(x) or x=g(y) or
corresponding inequalities.
• Relations equivalent to y=f(x) and
corresponding inequalities can only
have constraints on x
• For example: y=√(x) and 0≤x≤1 will
work but y=√(x) and 0≤y≤1 will not
• Relations equivalent to x=g(y) and
corresponding inequalities can only
have constraints on y
• For example: x=sin(y)|−1≤y≤1 will work
but x=sin(y)|−1≤x≤1 will not
Graphs Application 179