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Which of the following logarithms is undefined?(1 point)
log0.516
log2.56.25
log2−8
log381
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GPT-5 mini
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log_2(−8) is undefined.
Reason: a (real) logarithm requires the argument to be positive. −8 ≤ 0, so log_2(−8) does not exist in the real numbers.
Reason: a (real) logarithm requires the argument to be positive. −8 ≤ 0, so log_2(−8) does not exist in the real numbers.
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