Qn1

[youtube=http://www.youtube.com/watch?v=rT7bq6XXADc][/youtube]
Qn2
[youtube=http://www.youtube.com/watch?v=5O0GmBQG2Qc][/youtube]
Qn3
[youtube=http://www.youtube.com/watch?v=bNg2_PL8eRo][/youtube]

http://www.matharena.com.sg
http://www.learnbywatching.org

Hi,


Here is the solution:

[youtube=http://www.youtube.com/watch?v=0Zi0sFTZ-Cw][/youtube]


http://www.matharena.com.sg
http://www.learnbywatching.org