Math Problem Statement
Solution
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The question asks to find the domain and range for three functions:
Solutions:
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For :
- Domain: Since square roots require the argument to be non-negative, we need . Solving this gives . Therefore, the domain is:
- Range: The output of a square root function is non-negative, so the range is:
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For :
- Domain: The function is undefined when the denominator is zero, i.e., implies . Thus, the domain is all real numbers except :
- Range: Since this is a rational function, can take any real value except 0, which is asymptotically approached but never reached. Hence, the range is:
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For :
- Domain: The argument of the square root must be non-negative, i.e., . This implies that , so . Therefore, the domain is:
- Range: Since the square root function is non-negative, the range of this function is:
Would you like more details or clarifications? Here are five related questions to further explore these concepts:
- How do we determine the domain of a function involving a square root?
- What does the behavior of rational functions near vertical asymptotes tell us about their range?
- How would the domain of a function change if the expression under the square root was negative?
- Can you explain why never equals zero?
- How do the properties of inverse powers, like in , influence the function's domain?
Tip: When finding the domain of functions involving square roots, always start by solving the inequality inside the square root for non-negative values.
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Math Problem Analysis
Mathematical Concepts
Domain and Range
Square Root Functions
Rational Functions
Inequalities
Formulas
f(x) = √(2x + 3)
g(x) = 1 / (4x - 1)
h(x) = √((x + 1)^-1)
Theorems
The domain of a square root function requires the argument to be non-negative.
The domain of a rational function excludes values where the denominator is zero.
Suitable Grade Level
Grades 11-12
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