Let \( f(x)=\log (1-x)+\sqrt{x^{2}}-1 \). Then, \( \operatorname{do...
Let \( f(x)=\log (1-x)+\sqrt{x^{2}}-1 \). Then, \( \operatorname{dom}(f)= \) ?
\( \mathrm{P} \)
(a) \( (1, \infty) \)
(b) \( (-\infty,-1] \)
(c) \( [-1,1) \)
(d) \( (0,1) \)
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