MathDB
y = 1000/(x^2+100)

Source: (2022-) 2023 XVI 16th Dürer Math Competition Finals Day 2 E+3

May 25, 2024
algebra

Problem Statement

Hapi, the god of the annual flooding of the Nile is preparing for this year’s flooding. The shape of the channel of the Nile can be described by the function y=1000x2+100y = \frac{-1000}{ x^2+100} where the xx and yy coordinates are in metres. The depth of the river is 55 metres now. Hapi plans to increase the water level by 33 metres. How many metres wide will the river be after the flooding? The depth of the river is always measured at its deepest point. https://cdn.artofproblemsolving.com/attachments/8/3/4e1d277e5cacf64bf82c110d521747592b928e.png