1. Enter the left side of the
inequality into Y_{1}.
2. Enter the right side of the inequality into Y_{2}.
3. Enter the inequality into Y_{3} using the inequality symbols found
under 2nd MATH (TEST). Remember the Y_{1} and Y_{2} are found
under Vars →YVARS,
#1Function.
4. Hit GRAPH.
Just as we saw in Linear Inequalities, a small
bar appears representing the graph of the value 1, showing where the
inequality is true. In this case, the inequality
is true for 2 < x < 5. To determine
the "exact" values for the endpoints, use the INTERSECT option (2nd
TRACE (CALC) #5 intersect) with Y_{1} and Y_{2}.
Looking at the table shows that the Y_{3} values
alternate between being a 0 (false) and a 1 (true).
(Arrow to the right to "see" the column for Y_{3}.
Remember that < will not "include" the
endpoints.
