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《中小学数学》杂志是我们初中数学教师心目中级别最高、质量最好、专业性极强的数学专业杂志.然而,令人遗憾的是,偶尔也会出现一些小小的错误.例如:《中小学数学》2010年第10期,文章《慎用“归纳法”》,我认为有以下错误:错误之一原文,例2观察下列各组数字,试加上适当的符号,使符号成立.(1)a-b=____(b-a)(2)(a-b)~2=____(b-a)~2(3)(a-b)~3=____(b-a)~3(4)(a-b)~4=____(b-a)~4从以上可以得到(a-b)~n和(b-a)~n的关系是____.答案(1)-(2)+(3)-(4)+;(a-b)~n=(b-a)~n(n为偶数),(a-b)~n=-(b
“Primary and secondary mathematics” magazine is the highest level of our junior high school mathematics teachers, the best quality, highly specialized math magazine.However, unfortunately, occasionally there are some small mistakes.For example: Primary and secondary mathematics “2010 the tenth period, the article” caution “inductive ”, I think the following error: one of the original error, Example 2 observe the following groups of numbers, try adding the appropriate symbol so that the symbol (1) ab = ____ (ba) (2) (ab) ~ 2 = ____ (ba) ~ 2 (3) (ab) ~ 3 = ____ (ba) ~ 3 (4) ____ (ba) ~ 4 From the above it can be seen that the relationship between (ab) ~n and (ba) ~n is ____. Answer (1) - (2) + (3) - (4) +; = (ba) ~ n (n is even), (ab) ~ n = - (b