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Adding and Subtracting Rational Functions
To add or subtract rational functions, we use the same techniques used to add or subtract rational expressions. Specifically, to find or for rational functions and , substitute the given rational expressions for each function, find the least common denominator (LCD) if the denominators are unlike, rewrite each expression as an equivalent rational expression with the LCD, write them as a single rational expression, and simplify the result by factoring and removing any common polynomial factors.
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Intermediate Algebra @ OpenStax
Ch.7 Rational Expressions and Functions - Intermediate Algebra @ OpenStax
Algebra
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Division of Rational Functions
Multiplication of Rational Functions
Adding and Subtracting Rational Functions
A business analyst models the average revenue per client by dividing a polynomial representing total revenue by a polynomial representing the number of clients. What is the name of this type of function, which is defined as the ratio of two polynomial functions where the denominator is not zero?
A corporate data analyst uses a mathematical model to analyze the relationship between advertising spend and product sales. For to be categorized as a rational function, both the numerator and the denominator must be ________ functions, and the denominator cannot be zero.
A technical documentation specialist is organizing definitions for a mathematical modeling software. Match each term related to a 'Rational Function' with its correct role or definition.
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An operations analyst is reviewing mathematical models for supply chain efficiency. The training documentation states that a rational function, typically written as , is formed by the ratio of two polynomial functions where the denominator can be equal to zero.
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An operations analyst is merging two performance metrics represented by the rational functions and to determine the total system variance, defined by the sum . When the functions have different denominators, what is the correct sequence of steps to calculate and simplify the result?
A supply chain analyst is combining two efficiency models represented by the rational functions and . To calculate the total efficiency when the functions have different denominators, which of the following must be identified first to rewrite the expressions for addition?
An operations analyst is calculating the total impact of two efficiency models, and . True or False: To find the combined model , the analyst can simply add the numerators together to get as the new numerator while keeping the larger denominator, .
A logistics analyst is combining two operating cost models, and , to calculate a single total expenditure metric. Match each algebraic component or term used in the process of adding or subtracting these rational functions with its correct description.
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