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which of the following function(s) not ...

which of the following function(s) not defined at `x=0` has/have removable discontinuity at `x = 0`.

A

`f(x) =1/(1+2^(1/x))`

B

`f(x) = tan^(-1)(1/x)`

C

`f(x) = (e^(1/x)-1)/(e^(1/x)+1)`

D

`f(x) = 1/(ln|x|)`

Text Solution

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The correct Answer is:
A, B, C
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