寰笓棰樺崄鍏?/p>
绛夊樊銆佺瓑姣旀暟鍒?/p>
涓�銆?/p>
濉┖棰?/p>
1.
绛夊樊鏁板垪
{
a
n
}
涓紝
a
4
锛?/p>
a
8
锛?/p>
10
锛?/p>
a
10
锛?/p>
6
锛屽垯鍏樊
d
锛?/p>
________.
2.
宸茬煡
S
n
鏄悇椤瑰潎涓烘鏁扮殑绛夋瘮鏁板垪
{
a
n
}
鐨勫墠
n
椤瑰拰锛?/p>
鑻?/p>
a
2
a
4
锛?/p>
16
锛?/p>
S
3
锛?/p>
7
锛?/p>
鍒?/p>
a
8
锛?/p>
________.
3.
鍦ㄧ瓑宸暟鍒?/p>
{
a
n
}
涓紝宸茬煡
a
5
锛?/p>
a
6
锛?/p>
2
3
锛屽垯鏁板垪
{
a
n
}
鐨勫墠
10
椤瑰拰
S
10
锛?/p>
________.
