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Question

limx0+x(xx1)=p and limx0+xxx1=q, then p – q is equal to

A
2
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4
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C
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Solution

The correct option is A 2
limx0+(x)(xx1)=p
Let I=xx
log I=limx0+xlnx=limx0+lnx1x=0 I=1log p=limx0+(xx1)lnx=limx0+(exlnx1)lnxlimx0+(exlnx1)xlnx(xlnx)lnxlimx0+(lnx)21x=0
p = 1
q=limx0+(xxx1)=limx0+(x11)=1 q=1 pq=2

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