Find the range of each of the following functions.
(i) $f (x) = 2 - 3 x, x ϵ R, x > 0.$

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Solution

$f (x) = 2 - 3 x$
$⇓$
$x > 0$
$- x < 0$
$- 3 x < 0$
$2 - 3 x < 2$
$∴$ Range of $f (x) = (- \infty, 2)$

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