Find the maximum & minimum value of $f (x) = x^{3} + 1$ .

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Solution

$f (x) = x^{3} + 1$
$f (x) = 3 x^{3}$
putting f(x)equal to $0$ , we get $x = 0$
$f (x) = 6 x$
putting $x = 0$ in $f (x),$ we get $f (x) = 0$
as $f (x)$ is equal to $0,$ therefore is neither minimum nor maximum value of function.

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