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Original post by Shas72
so q coordinate will be p,0
Yes, so what about R?
Original post by Shas72
is it that I just substitute the x=p
Yes.
The first two question parts do not involve differentiation.
Original post by Shas72
I got it I just substitute and so the coordinates of R is (P, 9-P^2)
so when I do length QR I get the answer as 9-p^2
so when I do length QR I get the answer as 9-p^2
Yes, now part b) is just the area of a rectangle.
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