1
3.3
鏁村紡
瀛︿範鐩爣
1
锛庢帉鎻℃暣寮忓椤瑰紡鐨勯」鍙婂叾娆℃暟銆佸父鏁伴」鐨勬蹇点�?/p>
2
锛庣敱鍗曢」寮忎笌澶氶」寮忓綊绾冲嚭鏁村紡姒傚康銆?/p>
涓�銆佸垱璁鹃棶棰樻儏澧冿細
1
锛庡垪浠ｆ暟寮忥細
(1)
闀挎柟褰㈢殑闀夸笌瀹藉垎鍒负
a
銆?/p>
b
锛屽垯闀挎柟褰㈢殑鍛ㄩ暱鏄?/p>
锛?/p>
(2)
鏌愮彮鏈夌敺鐢?/p>
x
浜猴紝濂崇敓
21
浜猴紝鍒欒繖涓彮鍏辨湁瀛︾敓
浜猴紱
(3)
楦″厰鍚岀锛岄浮
a
鍙紝鍏?/p>
b
鍙紝鍒欏叡鏈夊ご
涓紝鑴?/p>
鍙�?/p>
2
锛庤瀵熶互涓婃墍寰楀嚭鐨勫洓涓唬鏁板紡涓庝笂鑺傝鎵�瀛﹀崟椤瑰紡鏈変綍鍖哄埆銆?/p>
浜屻�佽嚜涓诲涔犱笌鍚堜綔鎺㈢┒锛?/p>
锛堜竴锛夎嚜瀛︽彁绾诧細
璇峰悓瀛︿滑鍥寸粫鐫�鈥滀粈涔堝彨鍋氬椤瑰紡锛熷椤瑰紡鐨勬鏁帮紵澶氶」寮忕殑椤癸紵甯告暟椤癸紵鏁村紡锛熲�?/p>
杩欎簺闂锛岃嚜瀛﹁鏂囩
57
椤靛紑濮嬪埌
59
椤碘�滅粌涔犫�濅负姝€�?/p>
锛堜簩锛?/p>
銆佽嚜瀛︽娴嬶細
1.
濉┖锛?/p>
锛?/p>
1
锛夊嚑涓崟椤瑰紡鐨?/p>
锛屽彨鍋?/p>
.
鍜?/p>
缁熺О鏁村紡
.
锛?/p>
2
锛夊椤瑰紡
2x
4
-3x
5
-5
鏄?/p>
娆?/p>
椤瑰紡锛屾渶楂樻椤圭殑绯绘暟鏄?/p>
锛?/p>
鍥涙椤?/p>
鐨勭郴鏁版槸
锛屽父鏁伴」鏄?/p>
.
锛?/p>
3
锛夊椤瑰紡
a
3
-3ab
2
+3a
2
b-b
3
鏄?/p>
娆?/p>
椤瑰紡锛屽畠鐨勫悇椤圭殑娆℃暟閮芥槸
.
锛?/p>
4
锛夛紞
2
5
4
1
4
3
a
b
ab
-
+
鏄?/p>
娆?/p>
椤瑰紡锛屽叾涓笁娆￠」绯绘暟鏄?/p>
锛屼簩娆￠」涓?/p>
锛屽父
鏁伴」涓?/p>
锛屽啓鍑烘墍鏈夌殑椤?/p>
銆?/p>
锛?/p>
5
锛?/p>
鎶婁笅鍒椾唬鏁板紡锛?/p>
鍒嗗埆濉湪鐩稿簲鐨勯泦鍚堜腑锛?/p>
-5a
2
,-ab,-
3
xy
,a
2
-2ab,
3
2
m
n
-
,1-
2
2
x
,
1
3
m
+
;
鍗曢」寮忛泦鍚堬細
{
鈥?/p>
}
澶氶」寮忛泦鍚堬細
{
鈥?/p>
}
鏁?/p>
寮忛泦鍚堬細
{
鈥?/p>
}
2
锛庡垽鏂锛堝鐨勭敾鈥溾垰鈥?/p>
锛岄敊鐨勭敾鈥溍椻�?/p>
锛?/p>
锛?/p>
1
锛?
3
6
2
m
-
鏄暣寮忥紱
锛?/p>
锛?/p>
锛?/p>
2
锛夊崟椤瑰紡
6ab
3
鐨勭郴鏁版槸
6
锛屾鏁版槸
4
锛?/p>
锛?/p>
锛?/p>
锛?/p>
3
锛?/p>
3
2
b
c
a
-
鏄椤瑰紡锛?/p>
锛?/p>
锛?/p>
3.
閫夋嫨棰?/p>
锛?/p>
1
锛夊崟椤瑰紡
-xy
2
z
3
鐨勭郴鏁板拰娆℃暟鍒嗗埆鏄紙
锛?/p>
.
A
锛?/p>
-1
锛?/p>
5
B
锛?/p>
0
锛?/p>
6
C
锛?/p>
-1
锛?/p>
6
D
锛?/p>
0
锛?/p>
5
锛?/p>
2
锛夊椤瑰紡
-x
2
-
2
1
x-1
鐨勫悇椤瑰垎鍒槸锛?/p>
锛?/p>
A
锛?/p>
-x
2
,
2
1
x,1; B
锛?/p>
-x
2
,-
2
1
x,-1; C
锛?/p>
x
2
,
2
1
x,1;
D
锛庝互涓婄瓟妗堥兘涓嶅
.
锛堜笁锛?/p>
銆佺煡璇嗙偣褰?/p>
绾筹細