分式的乘方
\u5206\u5f0f\u4e58\u65b9\u7684\u5b9a\u4e49\u662f\u4ec0\u4e48\u770b\u662f\u521d\u4e2d\u6570\u5b66\u8fd8\u662f\u9ad8\u4e2d\u6570\u5b66\u8fd8\u662f\u5927\u5b66\u6570\u5b66\u3002
\u5206\u5f0f\u4e58\u65b9\u6216\u5206\u5f0f\u5f00\u65b9\u6309\u5927\u5b66\u6570\u5b66\u6765\u8bf4\u662f\u4e00\u6837\u7684\uff0c\u90fd\u662f\u6307\u6570\u8fd0\u7b97\uff0c\u6709\u7684\u5728\u5b9e\u6570\u57df\u6709\u89e3\uff0c\u6709\u7684\u5728\u590d\u6570\u57df\u624d\u6709\u89e3\u3002
\u5f53\u6307\u6570\u4e3a\u6b63\u6574\u6570\u65f6\uff0c\uff08\u8fd9\u662f\u521d\u4e2d\u6570\u5b66\uff09\uff0c\u5206\u5f0f\u4e58\u65b9\u5c31\u662f\u5206\u5f0f\u8fde\u4e58\uff0c\u4f8b\u5982\uff0c2\u6b21\u65b9\uff0c\u5c31\u662f \uff08\u5206\u5f0f\uff09\u4e58\uff08\u5206\u5f0f\uff09
3\u6b21\u65b9\uff0c\u5c31\u662f \uff08\u5206\u5f0f\uff09\u4e58\uff08\u5206\u5f0f\uff09\u4e58\uff08\u5206\u5f0f\uff09
\u5076\u6b21\u65b9\uff0c\u603b\u5f97\u6b63\u503c\uff0c
\u5947\u6b21\u65b9\uff0c\u5206\u5f0f\u662f\u8d1f\u503c\u5f97\u8d1f\u503c\uff0c\u5206\u5f0f\u662f\u6b63\u503c\u5f97\u6b63\u503c\u3002
\u96f6\u6b21\u65b9\u5f971.
\u5206\u5f0f\u4e58\u65b9\uff0c\u53ef\u4ee5\u5316\u6210\u5206\u5b50\u5206\u6bcd\u5206\u522b\u4e58\u65b9\uff0c\u518d\u7b97\u5546\u3002
C\u8bed\u8a00\u7f16\u7a0b\u7528\u51fd\u6570\uff1a
double pow( double x, double y );
x \u662f\u5206\u5f0f\u7684\u8868\u8fbe\u5f0f\u6216\u503c\uff0cy \u662f\u6b21\u65b9\u6216\u6307\u6570\u3002
绛旓細鍒嗗紡鐨涔樻硶娉曞垯锛歛/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闄や互闄ゆ暟鐨勫垎姣嶄綔鍟嗙殑鍒嗘瘝銆
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 銆傚垎寮忎箻鏂规硶鍒(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婃嫭鍙枫傚垎寮忔湰韬殑绗﹀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=...
绛旓細鍒嗗紡鐨勪箻闄ゆ硶娉曞垯濡備笅锛1銆佸垎寮忕殑涔樻硶娉曞垯锛氫袱涓垎寮忕浉涔橈紝鐢ㄥ垎瀛愮殑绉仛绉殑鍒嗗瓙锛屽垎姣嶇殑绉仛绉殑鍒嗘瘝銆2銆佸垎寮忕殑闄ゆ硶娉曞垯锛氫袱涓垎寮忕浉闄わ紝灏嗛櫎寮忕殑鍒嗗瓙銆佸垎姣嶉鍊掍綅缃悗锛屼笌琚櫎寮忕浉涔樸3銆鍒嗗紡鐨勪箻鏂娉曞垯锛氬垎寮忎箻鏂规槸鎶婂垎瀛愩佸垎姣嶅悇鑷箻鏂广傚悕甯堢偣閲戯細1銆佽娉ㄦ剰绗﹀彿鐨勫彉鍖栥2銆佸垎寮忕殑闄ゆ硶绫讳技浜庡垎鏁扮殑...
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=x鐨4娆℃柟/y² 脳 y²/x 脳x鐨4娆℃柟/y鐨4娆℃柟 =x鐨7娆℃柟/y鐨4娆℃柟 =-a鐨4娆℃柟b²/c³d鐨9娆℃柟脳 d³/2a脳c²/4a²=-ab²/8cd鐨6娆℃柟
绛旓細鍒嗗紡涔樻柟鐨娉曞垯锛氫竴鑸湴锛屽垎寮忎箻鏂硅鎶婂垎瀛愩佸垎姣嶅垎鍒箻鏂癸紝鐢ㄥ紡瀛愯〃绀轰负锛坅b锛塶=anbn锛庢晠绛旀涓猴細涔樻柟锛涳紙ab锛塶=anbn
绛旓細灏辨槸 锛堝垎寮忥級涔橈紙鍒嗗紡锛3娆℃柟锛屽氨鏄 锛堝垎寮忥級涔橈紙鍒嗗紡锛変箻锛堝垎寮忥級鍋舵鏂癸紝鎬诲緱姝ｅ硷紝濂囨鏂癸紝鍒嗗紡鏄礋鍊煎緱璐熷硷紝鍒嗗紡鏄鍊煎緱姝ｅ笺傞浂娆℃柟寰1.鍒嗗紡涔樻柟锛屽彲浠ュ寲鎴愬垎瀛愬垎姣嶅垎鍒箻鏂癸紝鍐嶇畻鍟嗐俢璇█缂栫▼鐢ㄥ嚱鏁帮細double pow(double x,double y );x 鏄鍒嗗紡鐨琛ㄨ揪寮忔垨鍊硷紝y 鏄鏂规垨鎸囨暟銆
绛旓細涓锛屽垎寮忕殑杩愮畻娉曞垯1銆佸垎寮忕殑鍔犲噺娉曪細鍚屽垎姣嶅垎寮忕浉鍔犲噺锛屽垎姣嶄笉鍙橈紝鎶婂垎瀛愮浉鍔犲噺锛涳細寮傚垎姣嶅垎寮忕浉鍔犲噺锛屽厛閫氬垎锛岃浆鍖栦负鍚屽垎姣嶅垎寮忓悗锛屽啀鍔犲噺銆2銆佸垎寮忕殑涔橀櫎娉曪細鍒嗗紡鐩镐箻锛屽垎瀛愪笌鍒嗗瓙鐩镐箻锛屽垎姣嶄笌鍒嗘瘝鐩镐箻锛涘垎寮忛櫎浠ュ垎寮忥紝鎶婇櫎寮忕殑鍒嗗瓙銆佸垎姣嶉鍊掍綅缃悗锛屽啀涓庤闄ゅ紡鐩镐箻銆3銆鍒嗗紡鐨勪箻鏂锛氭牴鎹箻鏂圭殑鎰忎箟...
