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Q.

⨍ x=1xx-1, x≠1 and ⨍  is continuous at x=1 then ⨍ 1=

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a

e

b

e2

c

1e2

d

1e

answer is A.

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Detailed Solution

fx=x1x-1,x1 and f is continuous

f1=limx1 f(x)

f1=limx1 x1x-1=1formlimxa fxg (x)=elimxafx-1g(x)

f1=elimx1(x-1)x-1 

=e

f1=e1

 

Option (1) is correct

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⨍ x=1xx-1, x≠1 and ⨍  is continuous at x=1 then ⨍ 1=