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Q1
:
If log
x
9
= -
1
, then
x
is equal to:
16
2
A
-
3
4
B
3
4
C
81
256
D
256
81
Solution
ANS:
D
-
256
81
log
x
9
= -
1
16
2
x
-1/2
=
9
16
1
=
9
x
16
x
=
16
9
x
=
16
2
9
x
=
256
81
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