Precalculus Examples

Find the Domain of the Difference of the Two Functions
,
Step 1
Find the difference of the functions.
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Step 1.1
Replace the function designators with the actual functions in .
Step 1.2
Multiply by .
Step 1.3
Combine the opposite terms in .
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Step 1.3.1
Subtract from .
Step 1.3.2
Add and .
Step 2
The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.
Interval Notation:
Set-Builder Notation:
Step 3
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