Absolute Value
Working with Absolute Value
(Equations and Inequalities) 
Example 2: Solve:
 Answer: x = 2;
x = 3.3333333
The x value is stored in the calculator's memory. If you wish
to change 3.333333333 to a fraction, simply return to the home
screen, hit x, hit Enter.
Now, change to fraction. (MATH, #1►Frac )
Answer: x = 2;
x = 10/3


Example 3:
Solve:


Example 4: Solve:
Boolean Check:

(The inequality symbols are under
the TEST Menu  2nd MATH.)
Answer: x
< 1; x > 5 
You could also
enter
( using Y_{1} and Y_{2}^{ }found under
Vars →YVars, Function) 
Where the inequality is true, yvalues on the graph will be a 1.
If you look at the table, 0's will be listed where the inequality is
false and 1's will be listed where the inequality is true.


Determine exact cut off points by using the intersection option. Remember that the calculator cannot draw an open or closed circle
on the intervals. You will have to determine which circle is
needed based upon whether the inequality includes "equal to".
Find the endpoints by using the intersect option (2nd TRACE #5
intersect).
If you turn off the axes (FORMAT  2nd ZOOM),
you will be able to see the graphing of the 0's and 1's more clearly.
Notice that the small vertical segment connecting the 0's to the 1's
is simply the calculator being set in "connected" mode.
Change to "dot" mode to remove this segment.

You "can" enter the inequality directly. Since you
will not have the two graphs from which to determine the
intersection points, you will need to
examine the table to determine the exact value of the
open/closed endpoints. 

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