Fot the function f(x)=ex+1ex−1, If n(d) denotes the number of intege – InterviewSolution

1.	Fot the function f(x)=ex+1ex−1, If n(d) denotes the number of integers which are not in its domain and n(r) denotes the number of integers which are not in its range,then n(d)+n(r) is equal to
Answer» Fot the function $f (x) = \frac{e^{x} + 1}{e^{x} - 1}$ , If $n (d)$ denotes the number of integers which are not in its domain and $n (r)$ denotes the number of integers which are not in its range,then $n (d) + n (r)$ is equal to

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