Precalculus Examples

Find the Domain 2/(x/(x+2))
Step 1
Set the denominator in equal to to find where the expression is undefined.
Step 2
Subtract from both sides of the equation.
Step 3
Set the denominator in equal to to find where the expression is undefined.
Step 4
Set the numerator equal to zero.
Step 5
The domain is all values of that make the expression defined.
Interval Notation:
Set-Builder Notation:
Step 6