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Question

If 2sinh1(a1a2)=log(1+x1x) then x=

A
a
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B
1a
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C
1a2
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D
11a2
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Solution

The correct option is A a
Since. sinh1x=log(x+1+x2)
2log(a1a2+1+a21a2)=log1+x1x
log(1+a1a2)2=log1+x1x
1+a1a=1+x1x
x=a

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