Find the domain of function f(x) =√2-x
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All Real number if it is -x +√2
If it is √(2-x)
Then under root term must be always Greater than or equal to 0
So 2-x≥0
x≤2
So Domain of x is (-∞,2].
If it is √(2-x)
Then under root term must be always Greater than or equal to 0
So 2-x≥0
x≤2
So Domain of x is (-∞,2].
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