写出它们的规律;(1) -1,-7,5,-19,29,-67,. (2) 2,-1,5,-7,17,-31,...
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写出它们的规律;(1) -1,-7,5,-19,29,-67,. (2) 2,-1,5,-7,17,-31,...
写出它们的规律;(1) -1,-7,5,-19,29,-67,. (2) 2,-1,5,-7,17,-31,...
写出它们的规律;(1) -1,-7,5,-19,29,-67,. (2) 2,-1,5,-7,17,-31,...
(1)从第一个数开始-6 +12 -24 +48 -96…………
(2)从第一个数开始-3 +6 -12 +24 -48…………
;(1) -1,-7,5,-19,29,-67,125,...... 小6,大12,小24,大48,小96,大192
(2) 2,-1,5,-7,17,-31,...小3,大6,小12,大24
(1) (-2)的n次方+3
(2) (-2)的n次方