Finite Math Examples

Find the Domain and Range
Solve to find the value of that makes the expression undefined.
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Set up the equation to solve for .
Since does not contain the variable to solve for, move it to the right side of the equation by adding to both sides.
For asymptotes and point discontinuity (denominator equals ), it is easier to find where the expression is undefined. These values are not part of the domain.
The domain is all values of that make the expression defined.
The range is the set of all valid values. Use the graph to find the range.
Determine the domain and range.
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