The domain of definition of the function $y(x)$ given by ${2^x} + {2^y} = 2$ is
The domain of definition of the function $y(x)$ given by ${2^x} + {2^y} = 2$ is
- [IIT 2000]
- A
$(0, 1]$
- B
$[0, 1]$
- C
$( - \infty ,\;0]$
- D
$( - \infty ,\;1)$
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