AM-2299

Stationary points

A Math · Secondary 4 · Medium · Stationary points

The area

A

of a rectangle is given by

A = 12x - 2x^2

, where

x

is in metres. Find the value of

x

at which

A

is stationary.

$3\,\text{m}$
$2\,\text{m}$
$4\,\text{m}$
$6\,\text{m}$

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