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प्रश्न
Write the range of the real function f(x) = |x|.
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उत्तर
Given:
f (x) = | x |, x ∈ R
We know that
\[\left| x \right| = \begin{cases}x, & x \geq 0 \\ - x & x < 0\end{cases}\]
It can be observed that the range of f (x) = | x | is all real numbers except negative real numbers.
∴ The range of f is [0, ∞) .
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