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3. Perform the steps below to register x≤-1.5 in Line A.
(1) Select [A:], and then press
.
(2) On the expression type list that appears, select [x≤a] and then press
.
(3) Input -1.5 for a.
((-))1 5
(4) After making sure that [Confirm] is selected, press .
4. Use the steps shown in step 3 to register x>-1.0 in Line B and
-2.0<x≤-0.5 in Line C.
[B:] > [x>a]
((-))1 0
[C:] > [a<x≤b]
((-))2 0
((-))0 5
5. After you finish registering all the expressions, select [Execute] on the
expression registration screen, and then press
.
•
This displays the number line graph screen. You can use and
to scroll the number line graph left or right.
(1) Shows the number lines of the equations or inequalities registered in
lines A, B, and C in sequence from top to bottom. The meanings of
the arrows (←, →) and circles ( , ) displayed on either end of the
number lines are described below.
87
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