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Mathematics
Problem
A logarithmic function
y
=
log
a
x
y=\log_a x
y
=
lo
g
a
x
passes through
(
1
,
0
)
(1,0)
(
1
,
0
)
and
(
1
9
,
−
2
)
(\tfrac19,-2)
(
9
1
,
−
2
)
. Which of the following is the value of
a
a
a
? a)
9
9
9
b)
1
3
\dfrac{1}{3}
3
1
c)
3
3
3
d)
3
\sqrt{3}
3
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