Current location - Plastic Surgery and Aesthetics Network - Wedding supplies - There is a huge arch bridge in St. Louis, USA. The height and bottom width of this arch bridge are 192m, and the stainless steel arch is American.
There is a huge arch bridge in St. Louis, USA. The height and bottom width of this arch bridge are 192m, and the stainless steel arch is American.
Establish a coordinate system with the midpoint of the arch bottom as the origin, the horizontal plane as the X axis and the vertical direction as the Y axis.

Let y = ax 2+192.

Because the parabola passes through the point (8 1, 0)

So 0 = 8 1 2a+ 192.

The solution is a=-2/8 1.

So the secondary resolution function corresponding to the arch bridge is:

y=-2/8 1x^2+ 192

Note: "2" stands for the square of XX.