2018
涓�冩暟瀛︾湡棰樿В鏋愬垎绫绘眹缂?/p>
鑰冪偣
20
绛夎叞涓夎褰€�佺瓑杈逛笁瑙掑舰
鍜岀洿瑙掍笁瑙掑舰
涓�锛庨�夋嫨棰橈紙鍏?/p>
5
灏忛锛?/p>
1
锛庯紙
2018鈥?/p>
婀栧窞锛夊鍥撅紝
AD
锛?/p>
CE
鍒嗗埆鏄柍
ABC
鐨勪腑绾垮拰瑙掑钩鍒嗙嚎锛庤嫢
AB=AC
锛?/p>
鈭?/p>
CAD=20掳
锛屽垯鈭?/p>
ACE
鐨勫害鏁版槸锛?/p>
锛?/p>
A
锛?/p>
20掳
B
锛?/p>
35掳
C
锛?/p>
40掳
D
锛?/p>
70掳
銆愬垎鏋愩�?/p>
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鈭?/p>
CAB=2
鈭?/p>
CAD=40掳
锛屸垹
B=
鈭?/p>
ACB=
锛?/p>
180掳
锕ｂ垹
CAB
锛?/p>
=70掳
锛庡啀鍒╃敤瑙掑钩鍒嗙嚎瀹氫箟鍗冲彲寰楀嚭鈭?/p>
ACE=
鈭?/p>
ACB=35掳
锛?/p>
銆愯В绛斻�?/p>
瑙ｏ細鈭?/p>
AD
鏄柍
ABC
鐨勪腑绾匡紝
AB=AC
锛屸垹
CAD=20掳
锛?/p>
鈭粹垹
CAB=2
鈭?/p>
CAD=40掳
锛屸垹
B=
鈭?/p>
ACB=
锛?/p>
180掳
锕ｂ垹
CAB
锛?/p>
=70掳
锛?/p>
鈭?/p>
CE
鏄柍
ABC
鐨勮骞冲垎绾匡紝
鈭粹垹
ACE=
鈭?/p>
ACB=35掳
锛?/p>
鏁呴�夛細
B
锛?/p>
2
锛庯紙
2018鈥?/p>
瀹胯縼锛夎嫢瀹炴暟
m
銆?/p>
n
婊¤冻绛夊紡
|
m
锕?/p>
2
|+
=0
锛屼笖
m
銆?/p>
n
鎭板ソ鏄瓑鑵?
鈻?/p>
ABC
鐨勪袱鏉¤竟鐨勮竟闀匡紝鍒欌柍
ABC
鐨勫懆闀挎槸锛?/p>
锛?/p>
A
锛?/p>
12
B
锛?/p>
10
C
锛?/p>
8
D
锛?/p>
6
銆愬垎鏋愩�?/p>
鐢卞凡鐭ョ瓑寮忥紝缁撳悎闈炶礋鏁扮殑鎬ц川姹?/p>
m
銆?/p>
n
鐨勫�硷紝鍐嶆牴鎹?/p>
m
銆?/p>
n
鍒嗗埆浣滀负
绛夎叞涓夎褰㈢殑鑵帮紝鍒嗙被姹傝В锛?/p>
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|
m
锕?/p>
2
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=0
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鈭?/p>
m
锕?/p>
2=0
锛?/p>
n
锕?/p>
4=0
锛?/p>
瑙ｅ緱
m=2
锛?/p>
n=4
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