Introduction - If you have any usage issues, please Google them yourself
1. The problem: given a straight line L and n (≤ 10) points Ak (k = 1,2, ... n), all in the first quadrant, and the L point B so that a given point n and the shortest distance. 2. The problem put forward: M0m3 have a pool of water, which salt akg, now v1 m3/min rate to the pool within the injected concentration of pkg/m3 of brine, v2 m3/min again at the same time the rate of outflow from the pool mixing uniform saline. test simulated the dynamic process of change pool