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Question

The number of solution of equation sin1x+nsin1(1x)=mπ2,where n>0,m0,is

A
3
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B
1
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C
2
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D
none of these
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Solution

The correct option is D none of these
sin1(x)+nsin1(1x)=mπ2πm=2(sin1(x)+nsin1(1x))
Solution exists only when
m=1,x=1 or n=m,x=0
But n>0,m0

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