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प्रश्न
Find the domain and range of the given real function:
f(x) = – |x|
उत्तर
Given f(x ) = - |x|
We know |x| is defined as non-negative real number for every x ∈ R.
∴ Domain off = R
Also, |x| ≥ 0 ∀ x ∈ R
=> - |x| ≥ 0 ∀ x ∈ R
∴ Range of f = (- ∞, 0]
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