人教版初二数学上册《分式的乘方》教案 初中数学八年级下册分式的乘方，高手进 （1）若x=1/2，则...
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1\uff09 1/4-4-1/2-2*2/1-4=1/4-4-1/2-4-4= -12.25
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绛旓細1銆鍒嗗紡鐨涔橀櫎 锛1锛変箻娉曟硶鍒欙細鍒嗗紡涔樺垎寮忥紝鐢ㄥ垎瀛愮殑绉綔涓虹Н鐨勫垎瀛愶紝鍒嗘瘝鐨勭Н浣滀负绉殑鍒嗘瘝銆傜敤寮忓瓙琛ㄧず涓$\frac{a}{b}路\frac{c}{d}=\frac{a路c}{b路d}$銆傦紙2锛夐櫎娉曟硶鍒欙細鍒嗗紡闄や互鍒嗗紡锛屾妸闄ゅ紡鐨勫垎瀛愩佸垎姣嶉鍊掍綅缃悗锛屼笌琚櫎寮忕浉涔樸傜敤寮忓瓙琛ㄧず涓$\frac{a}{b}梅\frac{c}{d}=\frac...
绛旓細1锛庣悊瑙ｅ苟璁颁綇鍒嗗紡涔樻柟鐨勬硶鍒欙紟(閲嶇偣)2锛庤兘杩愮敤涔樻柟娉曞垯鐔熺粌鍦拌繘琛屽垎寮忎箻鏂硅繍绠楋紟(閲嶇偣)3锛庤兘鍒嗘竻涔樻柟銆佷箻闄ょ殑杩愮畻椤哄簭锛岃繘琛鍒嗗紡鐨涔橀櫎銆佷箻鏂规贩鍚堣繍绠楋紟(闅剧偣)涓銆佹儏澧冨鍏ュ涔犱箻鏂圭殑鎰忎箟锛歛m锛漚脳a脳a脳a脳鈥γ梐,\s\do4(m涓))(m涓烘鏁存暟)锛屾寚鍑哄簳鏁癮鍙互浠ｈ〃涓涓暟锛屼竴涓暣寮忔垨浠ｆ暟寮忥紝涔...
绛旓細鍒嗗紡鐨勪箻鏂鏄垎寮忕殑涓绉嶅熀鏈繍绠楋紝瀹冩槸鎸囦竴涓垎寮忕殑鍒嗗瓙鍜屽垎姣嶅垎鍒繘琛屼箻鏂广傚垎寮忕殑涔樻柟鏈変袱绉嶅舰寮忥細涓绉嶆槸鍒嗗瓙鐨勪箻鏂癸紝鍙︿竴绉嶆槸鍒嗘瘝鐨勪箻鏂广1銆佸垎瀛愮殑涔樼寷娑叉柟锛氬鏋滀竴涓垎寮忎负a/b锛坅銆乥涓哄疄鏁帮紝涓攂鈮0锛夛紝閭ｄ箞瀹冪殑鍒嗗瓙鐨勪箻鏂瑰氨鏄紙a^n锛/锛坆^n锛夛紝鍏朵腑n涓轰换鎰忔鏁存暟銆備緥濡傦紝锛2/3锛塣2=...
绛旓細鍒嗗紡涔樻柟鐨勬硶鍒欙細涓鑸湴锛屽垎寮忎箻鏂硅鎶婂垎瀛愩佸垎姣嶅垎鍒箻鏂广傚垎寮忎箻鏂规垨鍒嗗紡寮鏂规寜澶у鏁板鏉ヨ鏄竴鏍风殑锛岄兘鏄寚鏁拌繍绠楋紝鏈夌殑鍦ㄥ疄鏁板煙鏈夎В锛屾湁鐨勫湪澶嶆暟鍩熸墠鏈夎В銆傚綋鎸囨暟涓烘鏁存暟鏃讹紝锛堣繖鏄垵涓暟瀛︼級锛屽垎寮忎箻鏂瑰氨鏄垎寮忚繛涔橈紝渚嬪锛2娆℃柟锛屽氨鏄 锛堝垎寮忥級涔橈紙鍒嗗紡锛夈鍒嗗紡鐨涔樻硶娉曞垯锛歛/b 脳 c/d ...
绛旓細鍒嗗紡鐨勪箻鏂鏄寚锛氭妸鍒嗗紡鐨勫垎瀛 銆 鍒嗘瘝鍒嗗埆涔樻柟鍗充负涔樻柟缁撴灉 銆鍒嗗紡涔樻柟娉曞垯(rule of power of a fraction)鏄垎寮忕殑杩愮畻娉曞垯涔嬩竴锛屽垎寮忎箻鏂圭殑娉曞垯鏄細鎶婂垎寮忕殑鍒嗗瓙銆佸垎姣嶅垎鍒箻鏂瑰嵆涓轰箻鏂圭粨鏋溿傚垎寮忎箻鏂规椂锛岃鎶婂垎寮忕殑鍒嗗瓙銆佸垎姣嶅垎鍒姞涓鎷彿銆傚垎寮忔湰韬殑绗﹀彿涔熻鍚屾椂涔樻柟銆傚垎寮忕殑鍒嗗瓙鍜屽垎姣嶆槸澶氶」寮忔椂锛...
绛旓細鍒嗗紡涔樻柟鐨勬硶鍒欙紙ruleofpowerofafraction锛夋槸锛氭妸鍒嗗紡鐨勫垎瀛愩佸垎姣嶅垎鍒箻鏂瑰嵆涓轰箻鏂圭粨鏋滐紝鍒嗗紡涔樻柟娉曞垯鏄垎寮忕殑杩愮畻娉曞垯涔嬩竴銆鍒嗗紡鐨勪箻鏂娉曞垯锛歛/b脳c/d=(a脳c)/(d脳d)鍒嗗瓙鐩镐箻浣滅Н鐨勫垎瀛愶紝鍒嗘瘝鐩镐箻浣滅Н鐨勫垎姣嶃俛/b梅c/d=(a梅c)/(b梅d)琚櫎鏁扮殑鍒嗗瓙闄や互闄ゆ暟鐨勫垎瀛愪綔涓哄晢鐨勫垎瀛愶紝琚櫎鏁扮殑鍒嗘瘝...
绛旓細鍒嗗紡涔樻柟娉曞垯(rule of power of a fraction)鏄鍒嗗紡鐨杩愮畻娉曞垯涔嬩竴锛屽垎寮忎箻鏂圭殑娉曞垯鏄細鎶婂垎寮忕殑鍒嗗瓙銆佸垎姣嶅垎鍒箻鏂瑰嵆涓轰箻鏂圭粨鏋淸1]銆備腑鏂囧悕 鍒嗗紡涔樻柟娉曞垯 澶栨枃鍚 (rule of power of a fraction 鎵灞炲绉 鏁板 鎵灞為棶棰 鍒濈瓑浠ｆ暟 绠浠 鍒嗗紡鐨勫垎瀛愩佸垎姣嶅垎鍒箻鏂 ...
绛旓細鍒濅簩鍒嗗紡鐨勪箻鏂 1涓洖绛 #璇濋# 鎵撳伐浜哄繀鐪嬬殑鑱屽満銆庣淮鏉冦忔寚鍗!鐧惧害缃戝弸c035224a0 楂樿禐绛斾富 2013-12-12 路 瑙夊緱鎴戣鐨勫閭ｅ氨澶氬鐐硅禐 鐭ラ亾澶ф湁鍙负绛斾富 鍥炵瓟閲:8248 閲囩撼鐜:18% 甯姪鐨勪汉:3975涓 鎴戜篃鍘荤瓟棰樿闂釜浜洪〉 鍏虫敞 灞曞紑鍏ㄩ儴 鏈洖绛旂敱鎻愰棶鑰呮帹鑽 宸茶禐杩 宸茶俯杩< 浣犲杩欎釜鍥炵瓟鐨勮瘎浠...
绛旓細鍒嗗紡鐨勪箻鏂 鎴戞潵绛 1涓洖绛 #娲诲姩# 鐧惧害鐭ラ亾閭ｄ簺骞,浣犺杩囩殑鈥滃濡欌濋棶绛?鍖垮悕鐢ㄦ埛 2014-12-15 灞曞紑鍏ㄩ儴 杩界瓟 鏈洖绛旂敱鎻愰棶鑰呮帹鑽 宸茶禐杩 宸茶俯杩< 浣犲杩欎釜鍥炵瓟鐨勮瘎浠锋槸? 璇勮 鏀惰捣 涓轰綘鎺ㄨ崘:鐗瑰埆鎺ㄨ崘 涓鍒嗛挓鐨凪BTI鎬ф牸娴嬭瘯闈犺氨鍚? 鏂板啝濡傛灉娌″悗閬楃棁,绾︾瓑浜庡ぇ鍙锋祦鎰熷悧? 涓婃捣涓轰粈涔堟湁澶ч噺鐨勬棤鐥囩姸...
绛旓細鈶碿^4/a^4b^2*锛坅^3/b^3c^3锛壝凤紙a^4c^4/b^4锛=1/a^5*b*c^3 鈶点愶紙x+y锛夛紙x-y锛/xy銆慯2梅锕檟锛媦锕*x^3/(x-y)(x^2+xy+y^2)=(x+y)(x-y)x/y^2*(x^2+xy+y^2)鈶秠^2/9x^2*(-8x^6)/y^3=-8x^4/9y 鈶穢^6/y^3梅x^2/y^4=x^4*y ...
