楂樹腑鏁板璇曞嵎绗?/p>
1
椤碉紝鍏?/p>
15
椤?/p>
2014
骞撮粦榫欐睙鐪佺互鍖栧競瀹夎揪楂樹腑楂樿�冩暟瀛︿笁妯¤瘯鍗凤紙鏂?
绉戯級
瀛︽牎
:___________
濮撳悕锛?/p>
___________
鐝骇锛?/p>
___________
鑰冨彿锛?/p>
___________
涓�銆侀�夋嫨棰?/p>
(
鏈ぇ棰樺叡
12
灏忛锛屽叡
60.0
鍒?/p>
)
1.
宸茬煡闆嗗悎
A={
x
|-2
鈮?/p>
x
鈮?/p>
7}
锛?/p>
B={
x
|
m
+1
锛?/p>
x
锛?/p>
2
m
-1}
涓?/p>
B
鈮?/p>
鈭?/p>
锛岃嫢
A
鈭?/p>
B=A
锛屽垯锛?/p>
锛?/p>
A.-3
鈮?/p>
m
鈮?/p>
4
B.-3
锛?/p>
m
锛?/p>
4
C.2
锛?/p>
m
锛?/p>
4
D.2
锛?/p>
m
鈮?/p>
4
銆愮瓟妗堛�?/p>
D
銆愯В鏋愩�?/p>
瑙ｏ細鏍规嵁棰樻剰锛岃嫢
A
鈭?/p>
B=A
锛屽垯
B
鈯?/p>
A
锛?/p>
鍙堢敱
B
鈮?/p>
鈭?/p>
锛?/p>
鍒欏彲寰?/p>
锛?/p>
锛?/p>
瑙ｅ彲寰楋紝
2
锛?/p>
m
鈮?/p>
4
锛?/p>
鏁呴�?/p>
D
锛?/p>
鏍规嵁棰樻剰锛岃嫢
A
鈭?/p>
B=A
锛屽垯
B
鈯?/p>
A
锛屽張鐢?/p>
B
鈮?/p>
鈭?/p>
锛岃繘鑰屽垯鍙緱
锛?/p>
锛岃В鍙緱绛?/p>
妗堬紟
瑙ｆ湰棰樻椂锛屾敞鎰?/p>
B
涓嶆槸绌洪泦鐨勬潯浠讹紝鍚﹀垯瀹规槗璇�?/p>
A
锛?/p>
2.
宸茬煡澶嶆暟
z
婊¤冻
z
鈥?/p>
i
=2-
i
锛?/p>
i
涓鸿櫄鏁板崟浣嶏紝鍒?/p>
z
=
锛?/p>
锛?/p>
A.2-
i
B.1+2
i
C.-1+2
i
D.-1-2
i
銆愮瓟妗堛�?/p>
D
銆愯В鏋愩�?/p>
瑙ｏ細璁?/p>
z
=
a
+
bi
锛?/p>
a
锛?/p>
b
鈭?/p>
R
锛?/p>
锛屸埖
z
鈥?/p>
i
=2-
i
锛屸埓锛?/p>
a
+
bi
锛?/p>
i
=2-
i
锛屸埓
-
b
+
ai
=2-
i
锛屸埓
锛?
瑙ｅ緱
锛?/p>
鈭?/p>
z
=-1-2
i
锛?/p>
鏁呴�?/p>
D
锛?/p>
鍒╃敤澶嶆暟杩愮畻鍜岀浉绛夊嵆鍙緱鍑猴紟
鐔熺粌鎺屾彙澶嶆暟杩愮畻鍜岀浉绛夋槸瑙ｉ鐨勫叧閿紟
3.
宸茬煡绛夊樊鏁板垪
{
a
n
}
涓紝
a
2
=7
锛?/p>
a
4
=15
锛屽垯鍓?/p>
10
椤圭殑鍜?/p>
S
10
=
锛?/p>
锛?/p>
A.100
B.210
C.380
D.400
銆愮瓟妗堛�?/p>
B
銆愯В鏋愩�?/p>
瑙ｏ細
d
=
锛?/p>
a
1
=3
锛?/p>