Find the Domain g=4f+h
Problem
Solution
Identify the components of the function
g The function is defined as the sum of two functions,4*ƒ andh Recall the rule for the domain of a sum. The domain of a function formed by adding or subtracting two functions is the intersection of the domains of the individual functions.
Determine the domain of
4*ƒ Since multiplying a function by a constant does not change its domain, the domain of4*ƒ is the same as the domain ofƒ denoted as(D_ƒ) Determine the domain of
h Let the domain ofh be denoted as(D_h) Find the intersection. The domain of
g consists of all values ofx that are in both(D_ƒ) and(D_h)
Final Answer
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