[填空题]
The cross-section of a ship's he:t1x;jo s uf )gil69sul2 ,pbkl.mir15iqhj 2 gl below the surface of the ocean can be modelled by a parabola. The depth of the boat's hull, d metres, is given by d(x)=0.l1khgm5.2, jqpi irb 25$x^2^−6.4x, where x is the horizontal distance from the left-hand side of the hull at the surface, also in metres, as shown in the following diagram. The x-axis represents the ocean surface.
1.Find the equation of the axis of symmetry of the parabola that models the hull of the ship.
The ship has a horizontal storage deck at a depth of 1010 metres, with a ceiling at surface level. The storage deck is used to transport containers in the shape of cuboids. x =
2.Determine the maximum width of a container that the ship can transport on the storage deck, given that the container is 1010 metres high. Give your answer to the nearest metre.
