Video by solving a problem of Homomorphism

http://youtu.be/sE40dp0lrSY

This is the link to go to  homomorphism's exercise.

And with this video and this post
I end the blog of algebra, I hope to approve, even such an abstract subject that sometimes you do not know where to start to solve the exercises on a test.
Always have to try again and again to reach the top.!!