谁能解释一下这道英文数学题中bearing的意思啊 数学中bearing是什么意思
\u8c01\u80fd\u89e3\u91ca\u4e00\u4e0b\u8fd9\u9053\u82f1\u6587\u6570\u5b66\u9898\u4e2dbearing\u7684= |PO|2=|PO|2-2 |PO| * |F1O| cos\u2220POF1 |PF2| 2+ |F1O|2\uff0c\u7528\u4f59\u5f26\u5b9a\u7406\u5bfc\u51fa\u7684 |PF1| 2\u6b65\u9aa4\u7701\u7565\u8f83\u591a;+ |F2O|2
\u65b9\u4f4d
\u89e3\u91ca\uff1athe situation or horizontal direction of one point with respect to another or to the compass (\u97e6\u6c0f\u5b57\u5178)
bearing:方位
meaning:the situation or horizontal direction of one point with respect to another or to the compass (韦氏字典)
距离
点A、B、C组成一个等腰三角形，B到A的距离是042
bearing:方位
绛旓細鎴戣寰楀氨鏄腑鏂囨濈淮澶噸銆傝繖鍙ヨ瘽缈昏瘧鎴愪腑鏂囦互鍚庯紝鈥鏁板鑰佸笀鈥濇槸涓蹇碉紝鍖哄埆浜庡叾瀹冪鐩佸笀鐨勬蹇碉紝鎵浠ヤ腑鏂囬噷涔犳儻鍦拌涓轰笉鑳界敤澶嶆暟銆備絾鏄鑻辨枃閲屼笉鏄繖涔堟濈淮鐨勩備腑鏂囬噷鎴戜滑璇/ 鑻辨枃閲岃 1浠栨槸鏁板鑰佸笀 / He is a mathematics teacher.2浠栦滑鏄暟瀛﹁佸笀 / They are mathematics teachers.杩欓噷鐨勪腑鏂団...
绛旓細a) 涓轰笅闈㈢殑鏁版嵁闆嗗仛涓涓〃鏍笺佷竴涓槧灏勫浘銆佷竴涓洸绾垮浘 b) 鏍囩鐨勫煙鍜岃寖鍥 c) 鏍囩鐙珛鍙橀噺鍜屽洜鍙橀噺 d) 杩欐槸涓嚱鏁板悧锛
绛旓細浠嶢鍒癇鐨勬柟鍚戜笂鐨勮窛绂 bearing:鏂逛綅 meaning:the situation or horizontal direction of one point with respect to another or to the compass (闊︽皬瀛楀吀)
绛旓細鍘熷嚱鏁皔=3x²+10x-8 姹傚锛屽鍑芥暟y'=6x+10 鍥犱负浠栫粰鐨勮繖3涓偣閮藉湪鏇茬嚎涓婏紝鐩存帴鎶3涓偣鐨勬í鍧愭爣甯﹀叆瀵煎嚱鏁颁腑锛屽緱鍒扮殑鍗充负鎵姹傘
绛旓細棣栧厛,浠庤寖鍥存潵鐪,瀹冭偗瀹氭槸闄や簡涓涓樁涔,涓嶄細鏄竴涓簲浣嶆暟,鍥犱负10鐨勯樁涔樺氨宸茬粡7浣嶆暟浜,B,C,E,鎺掗櫎 鐒跺悗,鍦ˋ,D涓,渚濇垜浠ュ線鐨勭粡楠,鑲畾閫塂,姣曠珶鎺掗櫎鐨勯偅浜涢夐」鏄负浜嗚糠鎯戜綘鐨,閭ｄ簺25000鑲畾鏈夌敤,灏遍塂浜,鎴戝钩鏃惰冭瘯閮芥槸杩欎箞杩炲仛甯﹀垎鏋愬甫鐚滅殑....
绛旓細瑙ｇ瓟锛歭og30=log(2*3*5)=log2+log3+log5=P+Q+R 鎵浠ョ瓟妗堥夋嫨B 2.If 4sin x cos x=鏍瑰彿3锛宼hen cos2x could be equal to:缈昏瘧锛氬鏋4sin x*cos x=鏍瑰彿3,閭ｄ箞cos2x 绛変簬澶氬皯锛熻В绛旓細|cos2x|=鏍瑰彿(1-锛坰in2x锛塣2)=鏍瑰彿锛1-(2sinx*cosx)^2锛=鏍瑰彿锛1-3/4锛=1/2 鎵浠os2x...
绛旓細涓昏灏辨槸涓涓槄璇荤殑闂锛欰鍗燘鐨勫嚑鍒嗕箣鍑犵敤鑻辨枃瑙ｉ噴鏄細what fraction of B are A 銆傚洜姝わ紝杩欎釜闂灏卞綊缁撲簬闃呰闂锛岃岃繖涓槄璇荤殑闂涓嶅湪浜庡崟璇嶏紝鑰屽湪浜庤繖涔堜竴鐐癸細涓嶄粎浠呮槸鍗曡瘝锛屼竴浜鏁板閲岄潰寰“鍙ｈ”鍖栫殑鍐呭鐢ㄨ嫳鏂囨庝箞琛ㄨ揪?鎻愪緵涓绉嶈В鍐崇殑鏂规硶锛氬湪棰樼洰閲岄潰閬囧埌浜嗚繖鏍风殑璇存硶锛岃嚜宸辩炕璇...
绛旓細鍗曚綅鍦 灏辨槸鍗婂緞涓1鐨勫渾
绛旓細5 涓 A骞B={2,3,4} 鐢憋紙1锛夊彲鐭锛孊涓兘鏈2 鐢憋紙2锛夊彲鐭涓湁4锛孉涓病4 鍒拌繖锛1,2,4,5閮借冭檻瀹屼簡锛屾帴涓嬫潵鐢憋紙2锛夊垎鏋愬厓绱3鍦ㄥ摢閲 鐢憋紙1锛夊彲鐭3涓嶅悓鏃跺湪A鍜孊涓 鑻3鍦ˋ涓紝涓嶅湪B涓紝锛2锛夋垚绔 鑻3鍦˙涓紝涓嶅湪A涓紝锛2锛変笉鎴愮珛 鎵浠 A={2锛3} B={2锛4} ...
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