2. What is the largest possible subset of R that can be a domain for the real-valued function f(x) = (x3-x)1/2 ?
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A. |
B. |
C. |
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D. |
E. |
Solution: The answer is C
Since we are dealing with a square root the quantity x3 –x must be greater than or equal to 0. But
so the answer is C.
