装修问答

济南奥体中心在设计理念上,吸收市树“柳树”,市花“荷花”的视觉元素,形成了“东荷西柳”气势恢弘的建?

∵an+1=bn-2an
∴an+2=bn+1-2an+1
②-①×3:90%">an=blimn:sub?4a3:1px;font-size;wordWrap:normal">

1
7
;wordSpacing:normal;wordSpacing;font-size:90%">n3b
lim
lim
1
n
bn+1
=k:nowrap;font-size:sub:1px">
an由题意:1px:1px:1px:normal">1
=b
lim
n→∞
n→∞
baan→∞
n
=n
n→∞
b
1
4

evilevilevil 462024-06-01