The domain and range of the real function f defined by `f(x)=(4-x)/(x-4)` is

Explanation

Given,` f(x) = (4 - x)/(x - 4)`

Now for real value of `x-4!=0`

`x!=4`

Hence the domain of` f = R-{4}`

For range

` f(x) = (4 - x)/(x - 4)`

=` f(x) =- (x - 4)/(x - 4)`

=`f(x)=-1`

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