||Three Ladders-Walls Problems
||Wei-Chi YANG and Matthias KAWSKI
In this paper, we solve three ladders-walls problems. The one ladder problem is a typical first year Calculus problem; see . The extension to more ladders and walls using Lagrange Multipliers was discussed in , but the calculations were complex. A simpler solution to two ladders-walls problems were discussed in . In this paper, we discuss the three ladders-walls problems and the extensions with the help of Dynamic Geometry and Computer Algebra System.