Ex 2.3, 2 (i) - Chapter 2 Class 11 Relations and Functions

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Ex 2.3, 2 Find the domain and range of the following real function: f(x) = –|x| Here we are given a real function Hence, both domain and range should be real numbers Here, x can be any real number Here, f(x) will always be negative or zero. All these are real values Here value of domain (x) can be any real number Hence, Domain = R (All real numbers) We note that that Range f(x) is 0 or negative numbers, Hence, Range = (−∞, 0]