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Solution


Q.

Domain of f(x)=x1-|x| is
1 R-[-1,1]  
2 (-∞,1)  
3 (-∞,1)∪(0,1)  
4 R-{-1,1}  

Ans.

(4)

For f(x) to be defined, 1-|x|≠0

⇒|x|≠1⇒Domain(f)=R-{-1,1}