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Exponentials & Logarithms
medium
0:00.0
Evaluate
log
7
(
7
−
1
)
\log_7(7^{-1})
lo
g
7
(
7
−
1
)
.
A
−
1
-1
−
1
B
0
0
0
C
1
1
1
D
7
7
7
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