观察下列三行数-2,4,-8,16,-32,64.0,6,-6,18,-30,66.-1,2,-4,8,-16,32.(
1个回答
1.设第n个数为a,则a=(-2)^n
2.第二行为第一行加2,第三行为第一行乘1/2
3.(-2)^3+(-2)^3+2+1/2*(-2)^3=-18
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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
观察下面三行数:-2,4,-8,16,-32,64,…①0,6,-6,18,-30,66,…②-1,2,-4,8,-16
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 …①0,6,-6,18,-30,66…②-1,2,-4,8
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 …①0,6,-6,18,-30,66…②-1,2,-4,8
观察下面三行数:-2,4,-8,16,-32,64,…; ①0,6,-6,18,-30,66,…;
观察下面三行数 2,-4,8,-16,32,-64...① 0,-6,6,-18,30,-66...② -1,2,-4,
观察下面三行数:(1)-2,4,-8,16,-32,64.(2)0,6,-6,18,-30,66.
下面三行数:-2,4,-8,16,-32,64,...0,6,-6,18,-30,66,...-1,2,-4,8,-16