16−口−2=7破十法怎么做连减？ 这一题怎么做？？？
\u8bf7\u95ee\u8fd9\u9053\u9898\u600e\u4e48\u505a\uff1f\u4e3b\u8981\u662f\u7b2c\u4e8c\u4e2a\u95ee\u3002\u4f5c\u4e1a\u5e2e\u4e86\u89e3\u4e00\u4e0b\uff1f
\u5982\u679c\u7528\u4e0d\u4e86\uff0c\u91c7\u7eb3\u7b54\u6848\uff0c\u6211\u5e2e\u4f60\u67e5\uff0c\u7ed9\u4f60\u622a\u56fe
1.f(x)=ax2+1(a>0),\u5219f\u2032(x)=2ax,k1=2a\uff0c
g(x)=x3+bx,\u5219g\u2032(x)=3x2+b,k2=3+b\uff0c
\u7531(1,c)\u4e3a\u516c\u5171\u5207\u70b9\uff0c\u53ef\u5f97\uff1a2a=3+b \u2460
\u53c8f(1)=a+1,g(1)=1+b\uff0c
\u2234a+1=1+b\uff0c
\u5373a=b\uff0c\u4ee3\u5165\u2460\u5f0f\uff0c\u53ef\u5f97\uff1aa=3\uff0cb=3.
(2)\u5f53a=3,b=−9\u65f6,\u8bbeh(x)=f(x)+g(x)=x3+3x2−9x+1
\u5219h\u2032(x)=3x2+6x−9\uff0c
\u4ee4h\u2032(x)=0\uff0c
\u89e3\u5f97\uff1ax1=−3,x2=1\uff1b
\u2234k⩽−3\u65f6,\u51fd\u6570h(x)\u5728(−\u221e,−3)\u4e0a\u5355\u8c03\u589e,\u5728(−3,1]\u4e0a\u5355\u8c03\u51cf,(1,2)\u4e0a\u5355\u8c03\u589e,\u6240\u4ee5\u5728\u533a\u95f4[k,2]\u4e0a\u7684\u6700\u5927\u503c\u4e3ah(−3)=28
−3<k<2\u65f6,\u51fd\u6570h(x)\u5728\u533a\u95f4[k,2]\u4e0a\u7684\u6700\u5927\u503c\u5c0f\u4e8e28
\u6240\u4ee5k\u7684\u53d6\u503c\u8303\u56f4\u662f(−\u221e,−3]
\u5206\u6790\uff1a
\uff081\uff09\u6839\u636e\u66f2\u7ebfy=f\uff08x\uff09\u4e0e\u66f2\u7ebfy=g\uff08x\uff09\u5728\u5b83\u4eec\u7684\u4ea4\u70b9\uff081\uff0cc\uff09\u5904\u5177\u6709\u516c\u5171\u5207\u7ebf\uff0c\u53ef\u77e5\u5207\u70b9\u5904\u7684\u51fd\u6570\u503c\u76f8\u7b49\uff0c\u5207\u70b9\u5904\u7684\u659c\u7387\u76f8\u7b49\uff0c\u6545\u53ef\u6c42a\u3001b\u7684\u503c\uff1b
\uff082\uff09\u5f53a=3\uff0cb=-9\u65f6\uff0c\u8bbeh\uff08x\uff09=f\uff08x\uff09+g\uff08x\uff09=x3+3x2-9x+1\uff0c\u6c42\u5bfc\u51fd\u6570\uff0c\u786e\u5b9a\u51fd\u6570\u7684\u6781\u503c\u70b9\uff0c\u8fdb\u800c\u53ef\u5f97k\u2264-3\u65f6\uff0c\u51fd\u6570h\uff08x\uff09\u5728\u533a\u95f4[k\uff0c2]\u4e0a\u7684\u6700\u5927\u503c\u4e3ah\uff08-3\uff09=28\uff1b-3<k<2\u65f6\uff0c\u51fd\u6570h\uff08x\uff09\u5728\u533a\u95f4[k\uff0c2]\u4e0a\u7684\u6700\u5927\u503c\u5c0f\u4e8e28\uff0c\u7531\u6b64\u53ef\u5f97\u7ed3\u8bba\uff0e
绛旓細16鍦16杩涘埗涓〃绀轰负10H锛孒鏄16杩涘埗鐨勬爣璁般鍗佸叚杩涘埗鏄绠楁満涓暟鎹殑涓绉嶈〃绀烘柟娉,瀹冪殑瑙勫垯鏄滈㈠崄鍏繘涓鈥濄傚崄鍏繘鍒舵暟鐨勫熀鏁版槸16锛岄噰鐢ㄧ殑鏁扮爜鏄0銆1銆2銆3銆4銆5銆6銆7銆8銆9銆丄銆丅銆丆銆丏銆丒銆丗銆傚叾涓瑼-F鍒嗗埆琛ㄧず鍗佽繘鍒舵暟瀛10-15銆傚崄鍏繘鍒舵暟鐨勬妧鏈鍒欐槸鈥滈㈠崄鍏繘涓鈥濓紝瀹冪殑鍚勪綅鐨...
绛旓細鍗佷竷宀佹椂锛屼簨涓氶棶棰橈紝鎰熸儏闂锛岃矗浠绘劅寮濮嬪湪涓涓汉鐨勭敓鍛戒腑鍑虹幇锛屽苟閫愭笎琚己鍖栵紝杩欐槸鎴愰暱鐨勫繀鐒惰繃绋嬶紝浼氬嚭鐜板緢澶氭劅鎯呮尝鎶橈紝灏辫薄涓鍦虹編涓界殑鏄ラ洦銆傝姳瀛ｉ洦瀛ｆ槸褰㈠鍗佸叚涓冨瞾闈掓槬鏈熷瀛愮殑骞撮緞銆16宀佹槸鈥滆姳瀛ｂ 17宀佹槸鈥滈洦瀛ｂ濄傝姳瀛ｉ洦瀛ｆ槸鏈缇庡ソ鐨勩佹渶娲绘臣銆佹渶鐏跨儌鐨勬椂鍏...鐢熷懡璧板埌闈掓槬鏃惰妭銆佷篃灏辨槸鍒颁簡...
绛旓細16鍘樼背绛変簬4.8瀵搞傚帢绫冲拰瀵搁兘鏄暱搴︾殑搴﹂噺鍗曚綅銆傚洜涓1瀵=3.33鍘樼背锛岄偅涔16鍘樼背=16梅3.33瀵 =4.8瀵搞傚嵆16鍘樼背绛変簬4.8瀵搞
绛旓細16鐨鍗佸叚杩涘埗鏄細10H 鎴栧啓涓猴細(10)16
绛旓細鐢ㄦ埛婊16宀侊紝鎯宠鐢宠鍔炵悊鐨勯摱琛屽崱鐨勮瘽锛岄渶瑕佹惡甯﹁韩浠借瘉鍒伴摱琛岃繘琛屽姙鐞嗭紱骞存弧16鍛ㄥ瞾锛屽彲鍑韩浠借瘉鍔炵悊閾惰鍗°備絾鏄18鍛ㄥ瞾浠ヤ笅鐨勭敤鎴峰姙鐞嗛摱琛屽崱鐨勬椂鍊欙紝鏄棤娉曠敵璇峰紑閫氱綉閾剁殑銆16鍛ㄥ瞾鏈垚骞翠汉鍔炵悊閾惰鍗★紝闄や簡瑕佸甫鏈夋晥韬唤璇佷欢锛岃繕闇瑕佹彁渚涚敤浜哄崟浣嶅姞鐩栧叕绔犵殑鏀跺叆璇佹槑銆
绛旓細婊鍗佸叚鍛ㄥ瞾鑳藉姙閾惰鍗° 婊16鍛ㄥ瞾鍙互鍑熸湰浜鸿韩浠借瘉鎴栨埛鍙ｆ湰鍒伴摱琛屽姙鐞嗛摱琛屽崱銆傛湭婊16鍛ㄥ瞾鐨勬儏鍐典笅锛屾兂瑕佸姙鐞嗛摱琛屽崱锛屽繀椤诲湪鐩戞姢浜虹殑闄悓涓嬶紝鐢辨硶瀹氱洃鎶や汉浠ｇ悊鐢宠锛岀敵璇锋椂闇瑕佹彁渚涘弻鏂硅韩浠借瘉銆佹埛鍙ｆ湰绛夊叧绯昏瘉鏄庯紝灏卞彲鐢宠鍔炵悊銆
绛旓細16涓暣浣撹璇婚煶鑺傚垎鍒槸锛歾hi 銆乧hi銆乻hi銆乺i銆亃i銆乧i銆乻i銆亂i銆亀u銆亂u銆亂e銆亂ue銆亂uan銆亂in 銆亂un銆亂ing銆傚彂闊冲彛褰㈣垖浣嶄笉濂芥帉鎻★紝鎶婅繖16涓煶鑺傚綋浣滄暣浣撴潵璇汇傛暣浣撹璇婚煶鑺備竴鑸槸鎸囨坊鍔犱竴涓煹姣嶅悗璇婚煶浠嶅拰澹版瘝涓鏍凤紙鎴栬呮坊鍔犱竴涓０姣嶅悗璇婚煶浠嶅拰闊垫瘝涓鏍凤級鐨勯煶鑺傦紙yuan姣旇緝鐗规畩锛夛紝涔熷氨鏄寚涓嶇敤...
绛旓細浣犲ソ锛屼綘16宀佽繕涓嶈鍔為摱琛屽崱鐨勫師鍥:1銆 浣犵殑瀹為檯骞撮緞骞朵负鍒16宀侊紝灏辨槸鎸夊勾浠芥潵绠椾綘鍒颁簡锛屼絾鏄寜鏈堟棩鏉ョ畻浣犲苟娌℃湁杈惧埌16宀侊紱2銆 浣犳湭甯﹁韩浠借瘉绛夊姙鐞嗛摱琛屽崱鎵闇鏉愭枡锛3銆 閾惰涓轰紤鍋囨椂闂达紝涓嶈兘鍔炵悊涓氬姟銆傚浗瀹惰瀹16宀佹槸鍙互鍔為摱琛屽崱鐨勶紝骞存弧鍗佸叚鍛ㄥ瞾鍙婁互涓婏紝鍙互鍑湰浜鸿韩浠借瘉鍙婂鍗颁欢鎴栬呮埛鍙ｆ湰...
绛旓細鏂规硶锛16杞10 16杩涘埗鏁扮殑绗0浣嶇殑鏉冨间负16鐨0娆℃柟锛岀1浣嶇殑鏉冨间负16鐨1娆℃柟锛岀2浣嶇殑鏉冨间负16鐨2娆℃柟鈥︹︽墍浠ワ紝鍦ㄧN锛圢浠0寮濮嬶級浣嶄笂锛屽鏋滄槸鏄暟 X 锛圶 澶т簬绛変簬0锛屽苟涓擷灏忎簬绛変簬 15锛屽嵆锛欶锛夎〃绀虹殑澶у皬涓 X * 16鐨凬娆℃柟銆備緥锛2AF5鎹㈢畻鎴10杩涘埗:鐢ㄧ珫寮忚绠楋細绗0浣嶏細 5 * 16^0 ...
绛旓細鍗佸叚杩涘埗鏁板叿鏈変笅鍒椾袱涓壒鐐:1.鑻辨枃瀛楁瘝A锛孊锛孋锛孌锛孍锛孎鍒嗗埆琛ㄧず鏁板瓧10锝15銆2.璁℃暟鍒癋鍚庯紝鍐嶅鍔1涓紝灏辫繘浣嶃傚崄鍏繘鍒舵暟浣滀负璁＄畻鏈哄父鐢ㄧ殑涓绉嶈鏁版柟娉曪紝瀹冨彲浠ュ讥琛ヤ簩杩涘埗鏁颁功鍐欎綅鏁拌繃闀跨殑涓嶈冻锛屼篃鐢ㄤ簬鐢佃鏈轰腑銆傚崄鍏繘鍒舵暟鐨勮〃绀烘柟寮忎负0x寮澶达紝绀轰緥锛0xAF=175銆傚崄鍏繘鍒舵暟鐨勫熀鏁版槸16锛岄噰鐢ㄧ殑...
