2.2
涓�鍏冧簩娆℃柟绋嬬殑瑙ｆ硶
2.2.3
鍥犲紡鍒嗚В娉?/p>
绗?/p>
2
璇炬椂
閫夋嫨鍚堥�傜殑鏂规硶瑙ｄ竴鍏冧簩娆℃柟绋?/p>
瀛︿範鐩爣銆?/p>
1.
浼氱敤鍚堥�傜殑鏂规硶瑙ｄ竴鍏冧簩娆℃柟绋?/p>
.
2.
浣撲細涓�鍏冧簩娆℃柟绋嬭В娉曚腑鐨勮浆鍖栦笌闄嶆鎬濇兂
.
閲嶇偣闅剧偣
閲嶇偣锛氭牴鎹笉鍚屾柟绋嬬殑鐗圭偣鐏垫椿閫夋嫨鍚堥�傜殑鏂规硶瑙ｄ竴鍏冧簩娆℃柟绋?/p>
.
闅剧偣锛氶�氳繃鎻ず鍚勭瑙ｆ硶鐨勬湰璐ㄨ仈绯伙紝娓楅�忛檷娆″寲褰掔殑鏁板鎬濇兂
.
銆?/p>
棰勪範瀵煎
銆?/p>
瀛︾敓鑷富棰勪範鏁欐潗
P
40
-P
41
锛屽畬鎴愪笅鍒楀悇棰?/p>
.
1.
鎴戜滑宸茬粡瀛︿範浜嗗摢涓夌瑙ｄ竴鍏冧簩娆℃柟绋嬬殑鏂规硶锛?/p>
2.
鐢ㄤ笉鍚岀殑鏂规硶瑙ｄ竴鍏冧簩娆℃柟绋?/p>
x
2
-4x-1=0
锛堥厤鏂规硶銆佸叕寮忔硶銆佸洜寮忓垎瑙ｆ硶锛?/p>
.
銆?/p>
鎺㈢┒灞曠ず
銆?/p>
锛堜竴锛夊悎浣滄帰绌?/p>
璁竴璁細涓嬪垪鏂圭▼鐢ㄥ摢绉嶆柟娉曟眰瑙ｈ緝绠�渚匡紵璇翠竴璇翠綘鐨勭悊鐢?/p>
.
锛?/p>
1
锛?/p>
x
2
-4x=0
锛?/p>
锛?/p>
2
锛?/p>
2x
2
+4x-3=0
锛?/p>
锛?/p>
3
锛?/p>
x
2
+6x+9=16.
鍚彂瀛︾敓褰掔撼锛氫竴鍏冧簩娆℃柟绋嬭В娉曠殑閫夋嫨椤哄簭涓�鑸负鍥犲紡鍒嗚В娉曘�佸叕寮忔硶锛岃嫢娌℃湁鐗规畩
璇存槑涓�鑸笉閲囩敤閰嶆柟娉曪紝
鍏紡娉曟槸涓�鑸柟娉曪紝
閫傜敤浜庤В鎵�鏈夌殑涓�鍏冧簩娆℃柟绋嬶紝
鍥犲紡鍒嗚В娉曟槸
鐗规畩鏂规硶锛屽湪瑙ｇ鍚堟柟绋嬪乏杈规槗鍥犲紡鍒嗚В锛屽彸杈逛负
0
鐨勭壒鐐圭殑涓�鍏冧簩娆℃柟绋嬫椂锛岄潪甯哥畝渚匡紝
鑰岄厤鏂规硶鏄负浜嗘帹瀵煎嚭姹傛牴鍏紡锛屼互鍙婂厛閰嶆柟锛岀劧鍚庡洜寮忓垎瑙?/p>
.
锛堜簩锛夊睍绀烘彁鍗?/p>
1.
閫夋嫨鍚堥�傜殑鏂规硶瑙ｄ笅鍒楁柟绋?/p>
.
锛?/p>
1
锛?/p>
x
2
+3x=0
锛?/p>
锛?/p>
2
锛?/p>
5x
2
+4x-1=0
锛?/p>
锛?/p>
3
锛?/p>
x
2
+2x-3=0.
2.
閫夋嫨鍚堥�傜殑鏂规硶瑙ｄ笅鍒楁柟绋?/p>
.
锛?/p>
1
锛?/p>
x
2
+
锛?/p>
3
+1
锛?/p>
x=0
锛?/p>
锛?/p>
2
锛?/p>
锛?/p>
x+2
锛?/p>
锛?/p>
x-5
锛?/p>
=1.
銆?/p>
鐭ヨ瘑姊崇悊
銆?/p>
浠モ�滄湰鑺傝鎴戜滑瀛﹀埌浜嗕粈涔堬紵鈥濆惎鍙戝鐢熻皥璋堟湰鑺傝鐨勬敹鑾?/p>
.