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Domain and Range Restrictions
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GMAT
Q.151 Domain and Range Restrictions
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Which condition gives the complete set of k-values for which x = 5 is allowed in fₖ(x) = √(x - k)/(x + k)?
A
k < 5 and k ≠ 5
B
k ≥ 5 and k ≠ -5
C
k ≤ 5 and k ≠ -5
D
k can be any real number
E
-5 < k ≤ 5
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