论文部分内容阅读
用字母代替数可使运算简化,下面以第13届“希望杯”初中二年级培训题(见本刊今年初中版第1期)为例说明. 例1 (22题)解令20002002=a,则原式
Using letters instead of numbers can simplify calculations. The following is the 13th “Hope Cup” junior high school second-grade training problem (see the first issue of this issue, the first issue of this year’s edition). Example 1 (22 questions) Order 20002002=a, The original