Pure Maths differentiation, area and volumeWatch
The fish tank will have a square base of side length x cm, and no lid. No glass is wasted. The glass can be assumed to be very thin.
(a) Show that the volume, V cm , of the fish tank is given by V = 400x -x^3/4
(b) Given that x can vary, use differentiation to find the maximum or minimum value of V.
(c) Justify that the value of V you found in part b is a maximum.
The mark scheme is on this, I just had this on a test and it annoyed me. What kind of psycho has a vertical fish task! https://portal.hppc.co.uk/files/vaca...pper_maths.pdf