Determine if Odd, Even, or Neither f(x) = square root of x
Problem
Solution
Identify the domain of the function
ƒ(x)=√(,x) Since the square root is only defined for non-negative real numbers in the real number system, the domain isx≥0 Check for symmetry requirements. For a function to be even or odd, its domain must be symmetric about the origin (if
x is in the domain, then−x must also be in the domain).Evaluate the function at
−x For anyx>0 the value−x is not in the domain ofƒ(x)=√(,x) Compare
ƒ*(−x) toƒ(x) and−ƒ(x) Sinceƒ*(−x) is undefined forx>0 the conditionsƒ*(−x)=ƒ(x) (even) andƒ*(−x)=−ƒ(x) (odd) cannot be satisfied for allx in the domain.
Final Answer
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