观察下列三行数:-2、4、-8、16、-32、64.①0、6、-6、18、-30、66.②-1、2、-4、8、-16、3
4个回答
1)(-2)^n
2)第二行是第一行每个数加2,第三行是第一行的每个数除以2
第二行的n个数是(-2)^n+2
第三行的n个数是[(-2)^n]/2
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