Inverse of the function \[f:R\to (-\infty ,1)\]given by\[f(x)=1-{{2}^{-x}}\] is

Inverse of the function \[f:R\to (-\infty ,1)\]given by\[f(x)=1-{{2}^{

1.	Inverse of the function \[f:R\to (-\infty ,1)\]given by\[f(x)=1-{{2}^{-x}}\] is
A.	\[-{{\log }_{2}}(1-x)\]
B.	\[-{{\log }_{2}}(x)\]
C.	0
D.	1
Answer» B. \[-{{\log }_{2}}(x)\]

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Inverse of the function \[f:R\to (-\infty ,1)\]given by\[f(x)=1-{{2}^{-x}}\] is

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