Need more examples, check out these videos:
http://www.youtube.com/watch?v=nSmFzOpxhbY
http://www.youtube.com/watch?v=Lt0L3wDHqm8
Want to try some more problems? Use the link below
http://archives.math.utk.edu/visual.calculus/3/inverse.1/index.html
HW: Complete today's WS 1 - 15