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Definition of Functions

f x = 3 x + 4...

Question

$f (x) = 3 x + 4$ ,if $x < - 2$ then $f (- 3) =$

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Solution

function is defined for $x$ less than $- 2$ therefore it is defined for $x = - 3$
$y = 3 (- 3) + 4$
$y = - 9 + 4$
$y = - 5$

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