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Logarithm
log -1/3 81 is equal to?
- 27
- 4
4
127
Show Answer
Correct Answer:
4
Explanation:
Let log
-1/3
81 = x
⇒ 81 = (-1/3)
x
⇒ 3
4
= (-1/3)
x
= 3
-x
∴ x = -4
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