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CGPET 2012 Solved Paper
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Section:
Mathematics
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© examsnet.com
Question : 112
Total: 150
If
log
x
a
,
a
x
∕
2
and
log
b
x
are in GP, then
x
is equal to
log
b
(
log
a
b
)
log
log
(
a
)
log
(
log
a
)
+
log
(
log
b
)
log
a
(
log
b
a
)
Validate
Solution:
log
x
a
,
a
x
∕
2
and
log
b
x
are in GP.
∴
(
a
x
∕
2
)
2
=
log
x
a
×
log
b
x
a
x
=
log
b
a
log
b
x
×
log
b
x
a
x
=
log
b
a
x
=
log
a
(
log
b
a
)
© examsnet.com
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