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| PAGE: 145 | SET: Exercises | PROBLEM: 1 |
The function is 
.
Let 
.
Therefore 
has 
real zeros at 
and 
.
Create a sign chart using these values.
.gif)
Note : The solid circles denote that the values are included in the solution set.
Observe the sign chart :
The set of values of 
denoted in pink color represents the solution set.
Determine whether 
is positive or negative on the test intervals.
Test intervals are 
and 
.
If 
, then 
.
If 
, then 
.
If 
, then 
.
The solutions of 
are values for which is negative or equal to 
.
The solution is 
.
The solution set of is 
.
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