10的8次方等于几的2次方 （一8的3次方等于
\u4e00\u4ebf\u662f10\u76848\u6b21\u65b9\uff0c\u662f\u4ec0\u4e48\u610f\u601d\u53c8\u662f\u600e\u4e48\u7b97\u7684\uff1f\u6bd4\u5982\u5341\u4ebf\u53c8\u662f\u591a\u5c11\u600e\u4e48\u7b97\uff1f\u8c22\u8c22\u53731\u4ebf\u8868\u793a8\u4e2a10\u76f8\u4e58\uff0c\u6240\u4ee51\u4ebf\u53ef\u4ee5\u752810^8\u8868\u793a\u3002
\u89e3\uff1a\u56e0\u4e3a1\u4ebf=100000000\uff0c
\u53c8100000000=10000x10000
=(100x100)x(100x100)
=((10x10)x(10x10))x((10x10)x(10x10))
=10x10x10x10x10x10x10x10
=10^8\u3002
\u53731\u4ebf\u8868\u793a8\u4e2a10\u76f8\u4e58\uff0c\u6240\u4ee51\u4ebf\u53ef\u4ee5\u752810^8\u8868\u793a\u3002
\u800c\u5341\u4ebf=10x1\u4ebf
=10x10^8=10^9\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u5e42\u7684\u610f\u4e49
a^m\u610f\u4e49\u4ea6\u53ef\u89c6\u4e3a1xaxax...xa\uff08\u5171m\u4e2aa\uff09\uff0c\u8d77\u59cb\u503c1\uff08\u4e58\u6cd5\u7684\u5355\u4f4d\u5143\uff09\u4e58\u5e95\u6307\u6570\u8fd9\u4e48\u591a\u6b21\u3002
2\u3001\u5e42\u7684\u8fd0\u7b97\u6cd5\u5219
\uff081\uff09\u540c\u5e95\u6570\u5e42\u7684\u4e58\u6cd5\u4e0e\u9664\u6cd5
\u540c\u5e95\u6570\u5e42\u76f8\u4e58\uff0c\u5e95\u6570\u4e0d\u53d8\uff0c\u6307\u6570\u76f8\u52a0\u3002\u540c\u5e95\u6570\u5e42\u76f8\u9664\uff0c\u5e95\u6570\u4e0d\u53d8\uff0c\u6307\u6570\u76f8\u51cf\u3002
\u5373a^m*a^n=a^(m+n)\u3001a^m\u00f7a^n=a^(m-n)
\uff082\uff09\u5e42\u7684\u4e58\u65b9
\u5e42\u7684\u4e58\u65b9\u8ba1\u7b97\uff0c\u5e95\u6570\u4e0d\u53d8\uff0c\u6307\u6570\u76f8\u4e58\u3002
\u5373(a^n)^m=a^(m*n)
3\u3001\u5bf9\u4e8ea^m\u00f7a^n=a^(m-n)\uff0c\u5f53m=0\uff0cn\uff1e0\u65f6\uff0c\u90a3\u4e48\u53ef\u5f97a^(-n)=a^0\u00f7a^n=1/a^n\u3002 \u5373\u8d1f\u6307\u6570\u5e42\u7684\u8fd0\u7b97\u5373\u662fa^(-n)=1/a^n\u3002
4\u3001\u8ba1\u6570\u5355\u4f4d\u4e4b\u95f4\u7684\u6362\u7b97\u5173\u7cfb
1\u4ebf=10x1\u5343\u4e07\u30011\u5343\u4e07=10x1\u767e\u4e07\u30011\u767e\u4e07=10x\u5341\u4e07\u3001\u5341\u4e07=10x1\u4e07\u30011\u4e07=10x1\u5343\uff0c
1\u5343=10x1\u767e\u30011\u767e=10x\u4e00\u5341\u3001\u4e00\u5341=10x1\u4e2a\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u8ba1\u6570\u5355\u4f4d
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u5e42
-8\u7684\u4e09\u6b21\u65b9
-8*-8*-8=-512
10000
10000
10000
绛旓細10000
绛旓細x=8锛坙n10/ln2锛墄=8log(2,10)
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绛旓細100000000銆傛鏂瑰氨鏄湁鍑犱釜璇ユ暟鐩镐箻锛屼緥濡10鐨2娆℃柟绛変簬10涔10绛変簬100锛屾墍浠10鐨8娆℃柟绛変簬8涓10鐩镐箻绛変簬100000000銆
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绛旓細鏄鐨 10鐨8娆℃柟杩滆繙澶т簬10鐨2娆℃柟
绛旓細4.0脳10^(-8)*1.6脳10^(-9)=(4.0*1.6)*10^(-8-9)=6.4*10^(-17)銆傚悓搴曟暟骞鐩镐箻锛屽簳鏁颁笉鍙橈紝鎸囨暟鐩稿姞銆 a^m脳a^n=a^锛坢+n锛(m,n閮芥槸鏈夌悊鏁)銆傚悓搴曟暟骞傜浉闄わ紝搴曟暟涓嶅彉锛屾寚鏁扮浉鍑忋 a^m梅a^n=a^锛坢-n锛(m,n閮芥槸鏈夌悊鏁)銆傝繍鐢ㄤ箻娉曞垎閰嶅緥锛屽厛灏嗗悓搴曟暟骞傜浉涔橈紝鐒跺悗...
