2017
骞翠腑鑰冨鑰冧笓棰樺涔狅細鐩镐技涓庝綅浼?/p>
涓�銆佸崟閫夐锛堝叡
12
棰橈紱鍏?/p>
24
鍒嗭級
1
銆佷笅鍒楀悇缁勭嚎娈甸暱搴︽垚姣斾緥鐨勬槸锛?/p>
锛?/p>
A
銆?/p>
1cm
銆?/p>
2cm
銆?/p>
3cm
銆?/p>
4cm
B
銆?/p>
1cm
銆?/p>
3cm
銆?/p>
4.5cm
銆?/p>
6.5cm
C
銆?/p>
1.1cm
銆?/p>
2.2cm
銆?/p>
3.3cm
銆?/p>
4.4cm
D
銆?/p>
1cm
銆?/p>
2cm
銆?/p>
2cm
銆?/p>
4cm
2
銆佸鍥撅紝鐐?/p>
C
鏄嚎娈?/p>
AB
鐨勯粍閲戝垎鍓茬偣锛?/p>
AC
锛?/p>
BC
锛夛紝涓嬪垪缁撹閿欒鐨勬槸锛?/p>
锛?/p>
A
銆?
B
銆?/p>
BC
2
=AB鈥C
C
銆?/p>
锛?/p>
D
銆?
鈮?.618
3
銆佽锛?/p>
2y
锕?/p>
z
锛夛細锛?/p>
z+2x
锛夛細
y=1
锛?/p>
5
锛?/p>
2
锛屽垯锛?/p>
3y
锕?/p>
z
锛夛細锛?/p>
2z
锕?/p>
x
锛夛細锛?/p>
x+3y
锛?/p>
=
锛?/p>
锛?/p>
A
銆?/p>
1
锛?/p>
5
锛?/p>
7
B
銆?/p>
3
锛?/p>
5
锛?/p>
7
C
銆?/p>
3
锛?/p>
5
锛?/p>
8
D
銆?/p>
2
锛?/p>
5
锛?/p>
8
4
銆佸鍥撅紝鍦ㄧ洿瑙掑潗鏍囩郴涓紝鐭╁舰
OABC
鐨勯《鐐?/p>
O
鍦ㄥ潗鏍囧師鐐癸紝杈?/p>
OA
鍦?/p>
x
杞翠笂锛?/p>
OC
鍦?/p>
y
杞翠笂锛?/p>
濡傛灉鐭╁舰
OA鈥睟鈥睠鈥?/p>
涓庣煩褰?/p>
OABC
鍏充簬鐐?/p>
O
浣嶄技锛屼笖鐭╁舰
OA鈥睟鈥睠鈥?/p>
鐨勯潰绉瓑浜庣煩褰?/p>
OABC
闈㈢Н鐨?/p>
锛?/p>
閭ｄ箞鐐?/p>
B鈥?/p>
鐨勫潗鏍囨槸锛?/p>
锛?/p>
A
銆侊紙锛?/p>
2
锛?/p>
3
锛?/p>
B
銆侊紙
2
锛岋紞
3
锛?/p>
C
銆侊紙
3
锛岋紞
2
锛夋垨锛堬紞
2
锛?/p>
3
锛?/p>
D
銆侊紙锛?/p>
2
锛?/p>
3
锛夋垨锛?/p>
2
锛岋紞
3
锛?/p>
5
銆?/p>
宸茬煡
k=
锛?
涓?/p>
+n
2
+9=6n
锛?/p>
鍒欏叧浜庤嚜鍙橀噺
x
鐨勪竴娆″嚱鏁?/p>
y=kx+m+n
鐨勫浘璞′竴瀹氱粡杩囩锛?/p>
锛夎薄闄愶紟
A
銆佷竴銆佷簩
B
銆佷簩銆佷笁
C
銆佷笁銆佸洓
D
銆佷竴銆佸洓
6
銆佸湪
鈻?/p>
ABC
涓紝
AB=AC=1
锛?/p>
BC=x
锛?/p>
鈭?/p>
A=36掳
.
鍒?/p>
鐨勫�间负锛?/p>
锛?/p>
A
銆?/p>
B
銆?
C
銆?/p>
1
D
銆?/p>
7
銆佺嚎娈?/p>
AB=10cm
锛岀偣
C
鏄嚎娈?/p>
AB
鐨勯粍閲戝垎鍓茬偣锛屼笖
AC
锛?/p>
BC
锛屽垯
AC
涓?/p>
AB
鐨勫叧绯绘槸锛?/p>
锛?/p>
A
銆?/p>
AC=
AB
B
銆?/p>
AC=
AB
C
銆?/p>
AC=
AB
D
銆?/p>
AC=
AB
8
銆?/p>
濡傚浘锛?/p>
宸茬煡鍦?/p>
鈻?/p>
ABC
涓紝
鐐?/p>
D
銆?/p>
E
銆?/p>
F
鍒嗗埆鏄竟
AB
銆?/p>
AC
銆?/p>
BC
涓婄殑鐐癸紝
DE
鈭?/p>
BC
锛?/p>
EF
鈭?/p>
AB
锛?/p>
涓?/p>
AD
锛?/p>
DB=3
锛?/p>
5
锛岄偅涔?/p>
CF
锛?/p>
CB
绛変簬锛?/p>
锛?/p>
.
A
銆?/p>
5
锛?/p>
8
B
銆?/p>
3
锛?/p>
8
C
銆?/p>
3
锛?/p>
5
D
銆?/p>
2
锛?/p>
5
9
銆佸湪
鈻?/p>
ABC
涓紝
AB=12
锛?/p>
BC=18
锛?/p>
CA=24
锛屽彟涓�涓拰瀹冪浉浼肩殑
鈻?/p>
DEF
鏈�闀跨殑涓�杈规槸
36
锛屽垯
鈻?/p>
DEF
鏈�鐭殑涓�杈规槸锛?/p>
锛?/p>