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Question

Find the domain and range of the real function f defined by f(x)=|x1|.

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Solution

f(x)=|x1|
It is clear that |x1| is defined for all real numbers.
Therefore, domain of f=R.
Also, for xR,|x1| assumes all real numbers.
Hence, the range of f is the set of all non-negative real numbers.

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