观察下面三行数:-2,4,-8,16,-32,64 …①0,6,-6,18,-30,66…②-1,2,-4,8
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/29 12:55:24
观察下面三行数:
-2,4,-8,16,-32,64 …①
0,6,-6,18,-30,66…②
-1,2,-4,8,-16,32…③
(1)第①行数按什么规律排列?
(2)第②③行数与第①行数有什么关系?
(3)取每行数的第十个数,计算这三个数的和.
-2,4,-8,16,-32,64 …①
0,6,-6,18,-30,66…②
-1,2,-4,8,-16,32…③
(1)第①行数按什么规律排列?
(2)第②③行数与第①行数有什么关系?
(3)取每行数的第十个数,计算这三个数的和.
![观察下面三行数:-2,4,-8,16,-32,64 …①0,6,-6,18,-30,66…②-1,2,-4,8](/uploads/image/z/807376-40-6.jpg?t=%E8%A7%82%E5%AF%9F%E4%B8%8B%E9%9D%A2%E4%B8%89%E8%A1%8C%E6%95%B0%EF%BC%9A-2%EF%BC%8C4%EF%BC%8C-8%EF%BC%8C16%EF%BC%8C-32%EF%BC%8C64%26nbsp%3B%E2%80%A6%E2%91%A00%EF%BC%8C6%EF%BC%8C-6%EF%BC%8C18%EF%BC%8C-30%EF%BC%8C66%E2%80%A6%E2%91%A1-1%EF%BC%8C2%EF%BC%8C-4%EF%BC%8C8)
(1)(-2)n;
(2)第②③行数与第①行数的关系为:第②行数比第①行相对应的数大2;第③行数是第①行相对应的数的
1
2;
(3)第一行的第十个数为:1024;
第二行的第十个数为:1026;
第三行的第十个数为:512;
1024+1026+512=2562.
故这三个数的和为:2562.
(2)第②③行数与第①行数的关系为:第②行数比第①行相对应的数大2;第③行数是第①行相对应的数的
1
2;
(3)第一行的第十个数为:1024;
第二行的第十个数为:1026;
第三行的第十个数为:512;
1024+1026+512=2562.
故这三个数的和为:2562.
观察下面三行数1,-2,4,-8,16,-32 …①0,-6,6,-18,30,-66 …②2,-4
观察下面三行数:-2,4,-8,16,-32,64 …①0,6,-6,18,-30,66…②-1,2,-4,8
观察下面三行数:2,-4,8,-16,32,-64,...(1)0,-6,6,-18,30,-66,...(2)1,-2
有理数的乘方 找规律观察下面三行数:-2,4,-8,16,-32,64…… ①0,6,-6,18,-30,66…… ②-
观察下面三行数,-2,4,-8,16,-32,64……0,6,-6,18,-30,66……-1,2,-4,8,-16,3
观察下面三行数:①-2,4,-8,16,-32,64……
观察下面三行数:(1)-2,4,-8,16,-32,64.(2)0,6,-6,18,-30,66.
观察下面三行数:①2,-4,8,-16,32,-64.②0,-6,6,-18,30,-66.③-1/2,1,-2,4,-
观察下面三行数 2,-4,8,-16,32,-64...① 0,-6,6,-18,30,-66...② -1,2,-4,
急!观察下面三行数: ①2,-4,8,-16,32,-64... ②0,-6,6,-18,30,-66... ③-1/2
观察下面三行数① 2,-4,8,-16,32,-64…;② 3,-3,9,-15,33,-63,…;③1,
观察下列三行数:-1,2,-4,8,-16,32,…; ①-2,4,-8,16,-32,64,…;