By MatthewMC
Re: Some comments on 50 lectures
« Reply #1 on: July 16, 2011, 11:19:08 PM »
Yongcheng:
Thank you for this helpful 50 lectures. It makes a lots thing much easier between me and my son.
I can see that you have spent a lots time try to reduce the trubles that parents and students would meet. Your hard work is very much appreciated.
So far I have went thought Chapter 1 to Chapter 4. Sorry to bother you with some minor thing (I understand this is the 1st version of the lecture and you like to show it perfectly):
--------On page 4 chapter 3, there is "C" missing in 2.1 the "Theoretic basis", the third row equation:
=100a^2 + 100a +b"c" = 100xax(a+1)+bc
--------On page 9 chapter 3, there is "3" missing in 2.6.2, the "Fast way", 48 x 111 = 5"3"28
--------On page 4 chapter 4, Example 5, 10 sould be replaced by 20.
Thanks again.