Origin for each line in single_doc/副_容冗/MH-20210116.md from check-in 60c256f91b:

60c256f91b 2024-06-27  顽雨沉风: % MH-20210116
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: # 原解
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: ~~~
60c256f91b 2024-06-27  顽雨沉风: 1 * 5 = 5
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: 2 * 4 = 8
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: 3 * 3 = 9
60c256f91b 2024-06-27  顽雨沉风: ~~~
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: # 扩展
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: ~~~
60c256f91b 2024-06-27  顽雨沉风: 6 = 3 + 3 = 3 + 3 + 1 - 1 = 3 + 1 + 3 - 1 = (3 + 1) + (3 - 1)
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: (3 + 1) * (3 - 1) = 3 * 3 + 3 * (-1) + 1 * 3 + 1 * (-1) = 3 * 3 + 1 * (-1) = 3 * 3 - 1 ^ 2 = 3 ^ 2 - 1 ^ 2
60c256f91b 2024-06-27  顽雨沉风: 
60c256f91b 2024-06-27  顽雨沉风: 3 ^ 2 > 3 ^ 2 - 1 ^ 2
60c256f91b 2024-06-27  顽雨沉风: ~~~
60c256f91b 2024-06-27  顽雨沉风: