When you solve logarithmic inequalities, you use the same rules for equations as you are used to.
Rule
aking the exponent on both sides of an inequality does not change the inequality. Thus, nothing happens to the inequality sign!
Example 1
Solve the inequality
Example 2
Solve the inequality
You need to flip the inequality sign when you divide by a negative number. You must have an equality sign in the last row as the answer is just changed to look nicer.
Example 3
Solve the inequality