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The function f(x)={(e^(1/x)-1)/(e^(1/x)+...

The function `f(x)={(e^(1/x)-1)/(e^(1/x)+1),x!=0 0,x=0` (a)is continuous at `x=0` (b)is not continuous at `x=0` (c)is not continuous at `x=0,` but can be made continuous at `x=0` (d) none of these

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