For the graph below, determine whether there is an Euler trail from u to w. If there is, find such a trail. A graph with 10 vertices and 13 edges is shown. Vertex a is connected to vertex b and to vertex u. Vertex b is connected to vertex a and to vertex c. Vertex c is connected to vertex b and to vertex u. Vertex d is connected to vertex e and to vertex f. Vertex e is connected to vertex d, to vertex f, and to vertex w. Vertex f is connected to vertex d, to vertex e, to vertex h, and to vertex u. Vertex g is connected to vertex h and to vertex w. Vertex h is connected to vertex f, to vertex g, and to vertex w. Vertex u is connected to vertex a, to vertex c, and to vertex f. Vertex w is connected to vertex e, to vertex g, and to vertex h. One Euler trail from u to w is: u f e w One Euler trail from u to w is: u a b c u f d e w g h f e w     One Euler trail from u to w is: u f h w There is not an Euler trail from u to w because all other vertices have an even degree. There is not an Euler trail from u to w because e and h also have odd degree. There is not an Euler trail from u to w because the graph is not connected.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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For the graph below, determine whether there is an Euler trail from u to w. If there is, find such a trail.
A graph with 10 vertices and 13 edges is shown.
  • Vertex a is connected to vertex b and to vertex u.
  • Vertex b is connected to vertex a and to vertex c.
  • Vertex c is connected to vertex b and to vertex u.
  • Vertex d is connected to vertex e and to vertex f.
  • Vertex e is connected to vertex d, to vertex f, and to vertex w.
  • Vertex f is connected to vertex d, to vertex e, to vertex h, and to vertex u.
  • Vertex g is connected to vertex h and to vertex w.
  • Vertex h is connected to vertex f, to vertex g, and to vertex w.
  • Vertex u is connected to vertex a, to vertex c, and to vertex f.
  • Vertex w is connected to vertex e, to vertex g, and to vertex h.
One Euler trail from u to w is: u f e w One Euler trail from u to w is: u a b c u f d e w g h f e w     One Euler trail from u to w is: u f h w There is not an Euler trail from u to w because all other vertices have an even degree. There is not an Euler trail from u to w because e and h also have odd degree. There is not an Euler trail from u to w because the graph is not connected.
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