Question

PQRS is a rectangle with base length 2p units and area A
The points P and Q lie on the x-axis and the points R and S lie on the
curve y = 9 - x2
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:

They easiest formula to find the answers of this type of question is

n=9

n=4

This is the easiest formula to solve the quickly

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