Determine if Odd, Even, or Neither f(x)=x square root of x+5
Problem
Solution
Identify the domain of the function. For the square root to be defined, the radicand must be non-negative:
x+5≥0 which meansx≥−5 Check for symmetry in the domain. A function can only be even or odd if its domain is symmetric about the origin (i.e., if
x is in the domain, then−x must also be in the domain).Evaluate the domain at a specific point. For example,
x=5 is in the domain because5≥−5 However,x=−6 is not in the domain because−6<−5 Conclude based on the domain. Since the domain
[−5,∞) is not symmetric about the origin, the conditionƒ*(−x)=ƒ(x) orƒ*(−x)=−ƒ(x) cannot hold for allx in the domain.
Final Answer
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