Practicing Success
In a school, a auditorium was used for its cultural activities. The shape of the floor of the auditorium is rectangular with dimensions x and y (x > y), has fixed parameter p. Based on the above information answer the following questions. |
The value of x, for which area of floor of auditorium is maximum is : |
$\frac{p}{4}$ $\frac{p}{2}$ p $\frac{p}{3}$ |
$\frac{p}{4}$ |
$A'(x) = \frac{p-4x}{2} = 0$ ⇒ $x = \frac{p}{4}$ so $A''(x) = \frac{-4}{2} < 0$ so $A(\frac{p}{4}) = \frac{p × \frac{p}{4} - 2 × \frac{p^2}{16}}{2}$ = $\frac{p^2}{16}$ at $x =\frac{p}{4}$ (max area) |