根号2等于多少 减根号2等于多少
\u6839\u53f72\u662f\u591a\u5c11\u6839\u53f72\u7684\u8fd1\u4f3c\u503c\u4e3a1.41421.
\u6839\u53f7\u662f\u4e00\u4e2a\u6570\u5b66\u7b26\u53f7\u3002\u6839\u53f7\u662f\u7528\u6765\u8868\u793a\u5bf9\u4e00\u4e2a\u6570\u6216\u4e00\u4e2a\u4ee3\u6570\u5f0f\u8fdb\u884c\u5f00\u65b9\u8fd0\u7b97\u7684\u7b26\u53f7\u3002\u82e5aⁿ=b\uff0c\u90a3\u4e48a\u662fb\u5f00n\u6b21\u65b9\u7684n\u6b21\u65b9\u6839\u6216a\u662fb\u76841/n\u6b21\u65b9\u3002
\u6269\u5c55\u8d44\u6599
1\u3001\u5199\u6839\u53f7\uff1a
\u5148\u5728\u683c\u5b50\u4e2d\u95f4\u753b\u5411\u53f3\u4e0a\u89d2\u7684\u77ed\u659c\u7ebf\uff0c\u7136\u540e\u7b14\u753b\u4e0d\u65ad\u753b\u53f3\u4e0b\u4e2d\u659c\u7ebf\uff0c\u540c\u6837\u7b14\u753b\u4e0d\u65ad\u753b\u53f3\u4e0a\u957f\u659c\u7ebf\u518d\u5728\u683c\u5b50\u63a5\u8fd1\u4e0a\u65b9\u7684\u5730\u65b9\u6839\u636e\u81ea\u5df1\u7684\u9700\u8981\u753b\u4e00\u6761\u957f\u5ea6\u9002\u4e2d\u7684\u6a2a\u7ebf\uff0c\u4e0d\u591f\u518d\u8865\u8db3\u3002\uff08\u8fd9\u91cc\u53ea\u91cd\u70b9\u4ecb\u7ecd\u7b14\u987a\u548c\u5199\u6cd5\uff0c\u53ef\u4ee5\u6839\u636e\u5370\u5237\u4f53\u53c2\u8003\u672c\u6761\u6a21\u4eff\u5199\u5373\u53ef\uff0c\u4e0d\u786c\u6027\u8981\u6c42\uff09
2\u3001\u5199\u88ab\u5f00\u65b9\u7684\u6570\u6216\u5f0f\u5b50\uff1a
\u88ab\u5f00\u65b9\u7684\u6570\u6216\u4ee3\u6570\u5f0f\u5199\u5728\u7b26\u53f7\u5de6\u65b9v\u5f62\u90e8\u5206\u7684\u53f3\u8fb9\u548c\u7b26\u53f7\u4e0a\u65b9\u4e00\u6a2a\u90e8\u5206\u7684\u4e0b\u65b9\u5171\u540c\u5305\u56f4\u7684\u533a\u57df\u4e2d\uff0c\u800c\u4e14\u4e0d\u80fd\u51fa\u754c\uff0c\u82e5\u88ab\u5f00\u65b9\u7684\u6570\u6216\u4ee3\u6570\u5f0f\u8fc7\u957f\uff0c\u5219\u4e0a\u65b9\u4e00\u6a2a\u5fc5\u987b\u5ef6\u957f\u786e\u4fdd\u8986\u76d6\u4e0b\u65b9\u7684\u88ab\u5f00\u65b9\u6570\u6216\u4ee3\u6570\u5f0f\u3002
3\u3001\u5199\u5f00\u65b9\u6570\u6216\u8005\u5f0f\u5b50\uff1a
\u5f00n\u6b21\u65b9\u7684n\u5199\u5728\u7b26\u53f7\u221a\uffe3\u7684\u5de6\u8fb9\uff0cn=2\uff08\u5e73\u65b9\u6839\uff09\u65f6n\u53ef\u4ee5\u5ffd\u7565\u4e0d\u5199\uff0c\u4f46\u82e5\u662f\u7acb\u65b9\u6839\uff08\u4e09\u6b21\u65b9\u6839\uff09\u3001\u56db\u6b21\u65b9\u6839\u7b49\uff0c\u662f\u5fc5\u987b\u4e66\u5199\u3002
\u53c2\u8003\u8d44\u6599\u767e\u5ea6\u767e\u79d1-\u6839\u53f7
\u51cf\u6839\u53f72\u7b49\u4e8e-1.414
\u221a2\u22481.414
-\u221a2\u2248-1.414
是无理数，无法写竖式,只有将就说明
一步:被开方数分段:2=2*00*00*00......
二步初商:√2.......商1....余1
三步:初商1×20=20,20+x作除数,被除数为100....试商x=4...余4..(这里除数为20+4=24)
四步:商14×20=280,280+x作除数,被除数为400...商x=1....余119...(这里除数为280+1=281)
五步:商141×20=2820,2820+x作除数,被除数为11900...商x=4...余604...(这里除数为2820+4=2824)
...........
∴√2=1.414213......
根号2=1.41421356......
1.41421356
取4位有效数字是1.414
绛旓細鈥滄洿鍙2鈥濇纭殑琛ㄨ堪鏄鏍瑰彿2鈥濓紝鏍瑰彿2鏄竴涓棤鐞嗘暟锛屽嵆鏃犻檺涓嶅惊鐜皬鏁帮紝绾绛変簬1.414銆鏍瑰彿浜涓瀹氭槸浠嬩簬1涓2涔嬮棿鐨勬暟锛岀劧鍚庡啀璁＄畻1.5鐨勫钩鏂瑰ぇ灏忥紝缁忚繃鍙嶅浠ｆ暟杩涘幓杩涜璁＄畻锛屼篃灏辨槸涓涓敤浜屽垎娉曟眰鏂圭▼x^2=2杩戜技瑙ｇ殑杩囩▼銆傛牴鍙锋槸鐢ㄦ潵琛ㄧず瀵逛竴涓暟鎴栦竴涓唬鏁板紡杩涜寮鏂硅繍绠楃殑绗﹀彿銆傚崄涓冧笘绾紝娉曞浗...
绛旓細鏍瑰彿2=1.41421鈥︹,绮剧‘鍒颁袱浣嶅皬鏁颁负1.41.
绛旓細鏍瑰彿2=1.4142135623730950488016887242097 绛変簬杈归暱涓1鐨勬鏂瑰舰瀵硅绾块暱搴︼紝绛変簬瀵硅绾块暱搴︿负2鐨勬鏂瑰舰杈归暱銆傛牴鍙2浣滀负涓涓棤鐞嗘暟娌″繀瑕佺煡閬撳畠鐨勭‘鍒囧硷紝鍙鐭ラ亾瀹冪殑搴旂敤鍜岃寖鍥村氨鍙互銆
绛旓細鈭2=1.414锛屸垰3=1.732 鈭6=鈭2x鈭3 =1.414x1.732 =2.449048 鈮2.449
绛旓細鏍瑰彿2绾︾瓑浜1.414锛屾牴鍙3绾︾瓑浜1.732锛屾牴鍙5绾绛変簬2.232锛屾牴鍙7绾︾瓑浜2.646銆傛牴寮忎箻闄ゆ硶娉曞垯锛1銆佸悓娆℃牴寮忕浉涔橈紙闄わ級锛屾妸鏍瑰紡鍓嶉潰鐨勭郴鏁扮浉涔橈紙闄わ級锛屼綔涓虹Н锛堝晢锛夌殑绯绘暟锛涙妸琚紑鏂规暟鐩镐箻锛堥櫎锛夛紝浣滀负琚紑鏂规暟锛屾牴鎸囨暟涓嶅彉锛岀劧鍚庡啀鍖栨垚鏈绠鏍瑰紡銆2銆侀潪鍚屾鏍瑰紡鐩镐箻锛堥櫎锛夛紝搴斿厛鍖栨垚鍚屾鏍瑰紡鍚庯紝...
绛旓細鏍瑰彿2绾=1.414
绛旓細鈭2鈮1.414 鈭3鈮1.732 鈭5鈮2.236 鏍瑰彿鏄竴涓暟瀛︾鍙枫傛牴鍙锋槸鐢ㄦ潵琛ㄧず瀵逛竴涓暟鎴栦竴涓唬鏁板紡杩涜寮鏂硅繍绠楃殑绗﹀彿銆傝嫢aⁿ=b锛岄偅涔坅鏄痓寮n娆℃柟鐨刵娆℃柟鏍规垨a鏄痓鐨1/n娆℃柟銆傚紑n娆℃柟鎵嬪啓浣撳拰鍗板埛浣撶敤琛ㄧず锛岃寮鏂圭殑鏁版垨浠ｆ暟寮忓啓鍦ㄧ鍙峰乏鏂光垰锟ｇ殑鍙宠竟鍜岀鍙蜂笂鏂逛竴妯儴鍒嗙殑涓嬫柟鍏卞悓鍖呭洿...
绛旓細鏍瑰彿浜锛堚垰2锛夌害绛変簬1.41421銆傝繖鏄竴涓棤鐞嗘暟锛屽畠鐨勫皬鏁伴儴鍒嗘槸鏃犻檺涓嶅惊鐜殑銆傚湪鏁板鍜屽伐绋嬪涓粡甯镐娇鐢ㄨ繖涓笺傛牴鍙凤紝鏁板绗﹀彿锛岀敤鏉ヨ〃绀哄涓涓暟鎴栦竴涓唬鏁板紡杩涜寮鏂硅繍绠楃殑绗﹀彿锛岀敤鈥溾垰鈥濊〃绀猴紝琚紑鏂圭殑鏁版垨浠ｆ暟寮忓啓鍦ㄧ鍙峰寘鍥寸殑鍖哄煙涓紝涓嶈兘鍑虹晫銆
绛旓細鈭2= 1.4142135623731 鈥︹
绛旓細鏍瑰彿2鐨勮繎浼煎间负1.41421.鏍瑰彿鏄竴涓暟瀛︾鍙枫傛牴鍙锋槸鐢ㄦ潵琛ㄧず瀵逛竴涓暟鎴栦竴涓唬鏁板紡杩涜寮鏂硅繍绠楃殑绗﹀彿銆傝嫢aⁿ=b锛岄偅涔坅鏄痓寮n娆℃柟鐨刵娆℃柟鏍规垨a鏄痓鐨1/n娆℃柟銆
