Precalculus Examples

Step 1
Find the domain for .
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Set the radicand in greater than or equal to to find where the expression is defined.
The domain is all values of that make the expression defined.
Interval Notation:
Set-Builder Notation:
Interval Notation:
Set-Builder Notation:
Step 2
To find the square root end point, substitute the value , which is the terminal value in the domain, into .
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Replace the variable with in the expression.
Simplify the result.
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Remove parentheses.
Rewrite as .
Pull terms out from under the radical, assuming positive real numbers.
The final answer is .
Step 3
The square root end point is .
Step 4
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