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Question

The inequality (x1)ln(2x)<0<0 holds, if x satisfies

A
1<x<2
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B
x>0
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C
0<x<1
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D
None of these
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Solution

The correct option is A 1<x<2
Given,

(x1)ln(2x)<0<0

(x1)ln(2x)<0 and 0<0

0<0 is false

(x1)ln(2x)<0

ln(2x)<0

ln(2x)<ln(e0)

ln(2x)<ln(1)

2x<1 and 2x>0

1<x<2

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