1.

Let \[f:R\to R\] be given by \[f(x)={{(x+1)}^{2}}-1,x\ge -1.\] Then, \[{{f}^{-1}}(x),\] is

A. \[-1+\sqrt{x+1}\]
B. \[-1-\sqrt{x+1}\]
C. Does not exist because f is not one-one
D. Does not exist because f is not onto
Answer» B. \[-1-\sqrt{x+1}\]


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