Question

PQRS is a rectangle with base length 2 p units and area Aunits.
The points P and O lie on the x-axis and the points Rand S lie on the
curve y = 9 - x2.
Р
о
о
2p units
a Express QR in terms of p.
b Show that A = 2p (9-p).
C Find the value of p for which A has a stationary value.
d Find this stationary value and determine its nature.​

Answer 1

Step-by-step explanation:

The formula to solve this type of example as quickly and easily is that

n=9

n=4

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