EDB — 0WR

Exercises

1. [0WR] Consider two balls \(B(x,r)\) and \(B(y,𝜌)\) radius \(0{\lt}r≤ 𝜌\) that have non-empty intersection: then \(B(x,r)⊆ B(y,𝜌)\).

   Similarly for the disks \(D(x,r){\stackrel{.}{=}}\{ y∈ X : d(x,y)≤ r\} \) and \(D(y,r)\).

   Solution 1

   [0WS]↺↻