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Question

limx1xm1xn1is

A
1
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B
mn
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C
mn
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D
m2n2
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Solution

The correct option is A mn
limx1(xm1xn1)

apply l hospital rule

limx1(mxmnxn)

Now,
put the value of x=1

=>m×xmn×xn

=>mn

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