Author Topic: Chapter 3 and 4 corrections  (Read 1735 times)

yongcheng3315

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Chapter 3 and 4 corrections
« on: July 26, 2011, 06:09:09 AM »
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.