A) \[(0,\ 1)\cup (0,\ \infty )\]
B) \[(-1,\ 0)\cup (1,\ \infty )\]
C) \[(-\infty ,\ -1)\cup (0,\ \infty )\]
D) \[(-\infty ,\ 0)\cup (1,\ \infty )\]
Correct Answer: D
Solution :
\[1-\frac{1}{x}>0\Rightarrow x>1\]. Also, \[x\ne 0\]. \ Required interval \[=(-\infty ,\,0)\cup (1,\,\infty )\].
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