Q.
If xy2=4 and log3log2x+log1/3log1/2y=1, then x=
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a
4
b
8
c
16
d
64
answer is D.
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Detailed Solution
log3log2x+log1/3log1/2y=1 or log3log2x−log3log1/2y=1 or log3log24/y2−log3log1/2y=1 or log24/y2=3log1/2y or log24/y2=−3log2y or log24/y2+log2y3=0 or 4y=1 or y=1/4⇒ x=64
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