Solving Inequalities
To solve an inequality, expressed by the form of f (x) ≤ 0, f (x) ≥ 0, or form of f (x) ≤ g (x), f (x) ≥ g (x), means to find all values that make the inequality true.
There are two methods of finding these values for
Example
Solve an inequality in two methods.
1. Solve 3(4 - 2x) ≥ 5 - x, by rewriting the
2. Solve 3(4 - 2x) ≥ 5 - x, by shading the solution region that makes the inequality true.
Before There may be differences in the results of calculations and graph plotting depending on the setting. Starting Return all settings to the default value and delete all data.
Step & Key Operation | Display | Notes |
*Use either pen touch or cursor to operate.
Y= | 3 | ( | 4 | — | 2 | X/ /T/n |
| ) |
— 5 + X//T/n
GRAPH
2nd F CALC
5*
3(4 - 2x) ≥ 5 - x
➞3(4 - 2x) - 5 + x ≥ 0
The
Since the graph is above the
x ≤ 1.4.