閲戞垐閾佸埗鍗?/p>
绗?/p>
8
绔?/p>
骞傜殑杩愮畻
鍗曞厓缁煎悎鍗?/p>
(A)
涓�銆侀�夋嫨棰樸�?/p>
(
姣忛
3
鍒嗭紝鍏?/p>
21
鍒?/p>
)
1
锛庝笅鍒楄绠楁纭殑鏄?/p>
(
)
A
锛?/p>
2
a
+
2
a
=
4
a
B
锛?/p>
2
a
-
a
=2
C
锛?/p>
(
ab
)
2
=
2
2
a
b
D
锛?/p>
(
2
a
)
3=
5
a
2
锛庢湁涓嬪垪鍚勫紡锛氣憼
2
n
a
路
n
a
=
3
n
a
锛?/p>
鈶?/p>
2
2
路
3
3
=6
5
锛?/p>
鈶?/p>
3
2
路
3
2
=81
锛?/p>
鈶?/p>
a
2
路
a
3
=5
a
锛涒懁
(-
a
)
2
路
(-
a
)
3
=
a
5
锛庡叾涓绠楁纭殑鏈?/p>
(
)
A
锛?/p>
4
涓?/p>
B
锛?/p>
3
涓?/p>
C
锛?/p>
2
涓?/p>
D
锛?/p>
1
涓?/p>
3
锛庡凡鐭ョ┖姘旂殑鍗曚綅浣撶Н璐ㄩ噺涓?/p>
1.24
脳
10
-3
鍏嬶紡鍘樼背
3
1.24
脳
10
-3
鐢ㄥ皬鏁拌〃绀轰负
(
)
A
锛?/p>
0
锛?/p>
000124
B
锛?/p>
0
锛?/p>
0124
C
锛?/p>
-0
锛?/p>
00124
D
锛?/p>
0
锛?/p>
00124
4
锛庤嫢
m
a
=2
锛?/p>
m
a
=3
锛屽垯
m
n
a
飥?/p>
鐨勫�间负
(
)
A
锛?/p>
5
B
锛?/p>
6
C
锛?/p>
8
D
锛?/p>
9
5
锛庤绠?/p>
25
m
梅
5
M
鐨勭粨鏋滀负
(
)
A
锛?/p>
5
B
锛?/p>
20
C
锛?/p>
20
m
D
锛?/p>
5
m
6
锛?/p>
濡傛灉
a
=(
涓�
99)
锔掞紝
b=(
涓�
0
锛?/p>
1)
-1
锛?/p>
C=(
5
3
飥?/p>
)
-2
锛?/p>
閭ｄ箞
a
銆?/p>
b
銆?/p>
c
鐨勫ぇ灏忓叧绯讳负
(
)
A
锛?/p>
a>c>b
B
锛?/p>
c>a>b
c
锛?/p>
a>b>c
D
锛?/p>
c>b>a