根号表公式 根号的公式
\u6839\u53f7\u516c\u5f0f\u5927\u5168\u221a18\uff1d3\u221a2
\u221a27\uff1d3\u221a3
\u221a48\uff1d4\u221a3
\u221a44\uff1d2\u221a11
\u221a125\uff1d5\u221a5
\u221a153\uff1d3\u221a17
\u221a225\uff1d15
\u221a72\uff1d6\u221a2
3\u221a18\uff0d\u221a32\uff1d9\u221a2-4\u221a2=5\u221a2
5\u221a32\uff0d\u221a200\uff1d20\u221a2-10\u221a2=10\u221a2
2\u221a27\uff0b3\u221a3\uff0d\u221a12\uff1d6\u221a3+3\u221a3-2\u221a3=7\u221a3
2\u221a20\uff0d\u221a45\uff0b\u221a500\uff1d 4\u221a5-3\u221a5+10\u221a5=11\u221a5
\u5316\u7b80\u4e4b\u7c7b\u7684\uff1a
\uff08\u221a3\uff0d\u221a2\uff09\uff08\u221a3\uff0b\u221a2\uff09\uff1d3-2=1(\u5e73\u65b9\u5dee\u516c\u5f0f\uff09
\uff08\u221a3\uff0d\u221a2\uff09\uff08\u221a3\uff0d\u221a20\uff09\uff1d 3-\u221a2*\u221a3-\u221a20*\u221a3+\u221a2*\u221a20=3-\u221a6-2\u221a15+2\u221a10
\uff08\u221a5\uff0d\u221a3\uff09\uff08\u221a5\uff0d\u221a3\uff09\uff1d5+3-2\u221a15=8-2\u221a15\uff08\u5b8c\u5168\u5e73\u65b9\u5dee\uff09
\uff082\u221a5\uff0b1\uff09\uff08\u221a5\uff0d1\uff09\uff1d\uff08\u221a5+1\uff09\uff08\u221a5-1\uff09+\u221a5-1=5-1+\u221a5-1=3+\u221a5\uff08\u5206\u914d\u7387,\u5e73\u65b9\u5dee\uff09
\uff084\u221a5\uff0d1\uff09\uff082\u221a5\uff0d1\uff09\uff1d(2\u221a5-1)^+2\u221a5(2\u221a5-1)=10+1-4\u221a5+10-2\u221a5=21-6\u221a5(\u5206\u914d\u7387,\u5b8c\u5168\u5e73\u65b9\u5dee)
\uff08\u221a11\uff0d3\uff09\uff08\u221a11\uff0b3\uff09\uff1d 11-3=8(\u5e73\u65b9\u5dee)
\u8ba1\u7b97\u516c\u5f0f
1\u3001\u6210\u7acb\u6761\u4ef6\uff1aa\u22650\uff0cn\u22652\u4e14n\u2208N\u3002
2\u3001\u6210\u7acb\u6761\u4ef6\uff1aa\u22650, n\u22652\u4e14n\u2208N\u3002
3\u3001\u6210\u7acb\u6761\u4ef6\uff1aa\u22650\uff0cb>0\uff0cn\u22652\u4e14n\u2208N\u3002
4\u3001\u6210\u7acb\u6761\u4ef6\uff1aa\u22650\uff0cb>0,n\u22652\u4e14n\u2208N\u3002
\u4e8c\u6b21\u6839\u5f0f\u8fd0\u7b97\u6ce8\u610f\u4e8b\u9879\uff1a
1\u3001\u4e8c\u6b21\u6839\u5f0f\u76f8\u52a0\u51cf\uff0c\u5148\u628a\u5404\u6839\u5f0f\u5316\u4e3a\u6700\u7b80\u4e8c\u6b21\u6839\u5f0f\uff0c\u518d\u5408\u5e76\u540c\u7c7b\u4e8c\u6b21\u6839\u5f0f\u3002
2\u3001\u4e8c\u6b21\u6839\u5f0f\u7684\u4e58\u9664\u6cd5\u5e38\u7528\u4e58\u6cd5\u516c\u5f0f\u6216\u9664\u6cd5\u516c\u5f0f\u6765\u7b80\u5316\u8ba1\u7b97\uff0c\u8fd0\u7b97\u7ed3\u679c\u4e00\u5b9a\u8981\u5199\u6210\u6700\u7b80\u4e8c\u6b21\u6839\u5f0f\u3002
3\u3001\u5229\u7528\u4e09\u89d2\u5f62\u7684\u4e09\u8fb9\u5173\u7cfb\u8fdb\u884c\u5316\u7b80\u3002\u5229\u7528\u4e8c\u6b21\u6839\u5f0f\u7684\u53cc\u91cd\u975e\u8d1f\u6027\u7684\u6027\u8d28\uff0c\u88ab\u5f00\u65b9\u6570\u5f00\u65b9\u51fa\u6765\u540e\uff0c\u7b49\u4e8e\u5b83\u7684\u7edd\u5bf9\u503c\u3002
根号是一个数学符号。根号是用来表示对一个数或一个代数式进行开方运算的符号。若a^n=b，那么a是b开n次方的n次方根或a是b的1/n次方。开n次方手写体和印刷体用√表示，被开方的数或代数式写在符号左方v形部分的右边和符号上方一横部分的下方共同包围的区域中，而且不能出界。
绛旓細鏍瑰彿琛ㄥ叕寮忔槸鈭歛b=鈭歛路鈭歜锛坅鈮0b鈮0锛夈佲垰a锛廱=鈭歛梅鈭歜锛坅鈮0b>0锛夈佸綋a锛0鏃讹紝鈭歛2=a銆佸綋a=0鏃讹紝鈭歛2=0銆傛牴鍙锋槸涓涓暟瀛︾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a^n=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鈭氳〃...
绛旓細2銆佷袱涓叕寮:(1)鈭氾紙a^2锛夛紳|a|锛(2)(鈭歛)^2锛漚(a鈮0)銆3銆佷袱鏉℃ц川锛(1)鈭氾紙ab锛=鈭歛路鈭歜銆 (2)鈭氾紙a/b锛=鈭歛/鈭歜銆4銆佷袱涓蹇:(1)鏈绠浜屾鏍瑰紡 绗竴锛屾牴鍙蜂笅涓嶅惈鍒嗘瘝锛屽垎姣嶄腑涓嶅惈鏍瑰彿锛涚浜岋紝鏍瑰彿涓嬩笉鍚紑寰楀敖鏂圭殑鍥犳暟鍜屽洜寮忋(2)鍚岀被浜屾鏍瑰紡 鍖栫畝...
绛旓細EXCEL琛ㄦ牸閲岄潰杈撳叆鏍瑰彿鍏紡鐨勫叿浣撴搷浣滄柟娉曞涓:1.鎵撳紑excel銆2.鐐瑰嚮鑿滃崟鏍忛噷鐨勨滃嚱鏁扳濓紝閫夋嫨鈥滄暟瀛﹀拰涓夎鍑芥暟鈥濆脊鍑轰竴涓滃嚱鏁板弬鏁扳濈殑瀵硅瘽妗嗐3.鍚屾椂鍦ㄥ崟鍏冩牸閲岄〉鏄剧ず鍑鸿繑鍥炵殑鍑芥暟锛歅OWER()4.鈥滃嚱鏁板弬鏁扳濈殑瀵硅瘽妗嗘湁涓ら」锛屼竴椤逛负Number锛氫负搴曟暟銆傚彲浠ユ槸浠绘剰瀹炴暟銆備竴椤逛负Power锛氫负骞傚硷紝濡傝璁＄畻17...
绛旓細鐞冪殑琛ㄩ潰绉箣姣旂瓑浜庡崐寰勪箣姣旂殑骞虫柟锛屾墍浠ュ崐寰勬瘮涓猴細1 锛 鈭2 锛 鈭3 鐞冪殑浼戠Н涔嬫瘮绛変簬鍗婂緞涔嬫瘮鐨勭珛鏂癸紝鎵浠ヤ綋绉瘮涓猴細 1 锛(鈭2)^3 锛(鈭3)^3 =1 : 2鈭2 : 3鈭3
绛旓細寮鏍瑰彿鍏紡 1.鈭歛b=鈭歛路鈭歜锛坅鈮0b鈮0锛2.鈭歛锛廱=鈭歛梅鈭歜锛坅鈮0b>0锛3.鈭歛²=|a|锛堝叾瀹炲氨鏄瓑浜庣粷瀵瑰硷級褰揳锛0鏃锛屸垰a²=a锛堢瓑浜庡畠鐨勬湰韬級褰揳=0鏃讹紝鈭歛²=0 褰揳锛0鏃讹紝鈭歛²=锛峚锛堢瓑浜庡畠鐨勭浉鍙嶆暟锛夋牴鍙峰畾涔 鏍瑰彿鏄竴涓暟瀛︾鍙枫傛牴鍙锋槸鐢ㄦ潵...
