对正整数a，b定义一种新运算*，使得a*b=ab÷a+b，求104*（208*208）的值 对于正整数a、b，规定一种新运算⊙
\u5bf9\u6b63\u6574\u6570a\uff0cb\u5b9a\u4e49\u4e00\u79cd\u65b0\u8fd0\u7b97\u25b3\uff0c\u4f7f\u5f97a\u25b3b=ab/a+b\uff0c\u6c42104\u25b3(208\u25b3208)\u7684\u503c\u3002
6\u2299\uff081\u22992\uff09=6\u2299\uff081\u00d72\uff09=6\u22992=6\u00d77=42
208*208=208x208/208+208=208+208=416
104*416=104x416/104+416=416+416=832
绛旓細鐜瀹氫箟涓绉嶆柊鐨勮繍绠鈥*鈥濓紝瑙勫畾a*b=2a-b(a銆乥涓烘暣寮)銆傚綋a=X²-y²锛宐=x²+y²,c=2xy+y²鏃讹紝姹備笅鍒楀悇寮忕殑鍊 (1)a*c =2a-c =2x^2-2y^2-(2xy+y^2)=2x^2-2xy-3y^2 (2)a*(b*c)=a*(2b-c)=a*(2x^2+2y^2-2xy-y^2)=a*(2x^2+y^...
绛旓細6鈯欙紙1鈯2锛=6鈯欙紙1脳2锛=6鈯2=6脳7=42
绛旓細瑙勫畾涓绉嶆柊鐨勮繍绠绗﹀彿鈥*",瀹氫箟a*b=a-b/ab锛岃鏍规嵁绗﹀彿鈥*鈥濈殑鎰忎箟瑙ｇ瓟銆傦紙1锛4*2 =(4-2)/4x2 =1/4 锛2锛夛紙2*3)*(-2)=(2-3)/2x3*锛-2锛=-1/6*(-2)=(-1/6+2)/(1/6x2)=11/2
绛旓細(-2)鈥3=锛-2锛壝楋紙-1锛壝0=0
绛旓細6鈯欙紙1鈯2锛=6鈯欙紙1脳2锛=6鈯2=6脳7=42
绛旓細1鈻姐3鈻斤紙3鈻1锛夈=1鈻姐3鈻3銆=1鈻姐3+4+5銆=1鈻12=1+2+3+4+5+6+7+8+9+10+11+12=78锛庢晠绛旀涓猴細78锛
绛旓細鏄紙a+2b锛/3 杩樻槸a+2b/3锛熷笇鏈涘府鍔╁埌浣狅紝鑻ユ湁鐤戦棶锛屽彲浠ヨ拷闂畘~~绁濅綘瀛︿範杩涙锛屾洿涓婁竴灞傛ゼ锛(*^__^*)
绛旓細鏂拌繍绠灏辨槸鐢ㄢ*鈥濃溾柍鈥濃淍鈥濈瓑澶氱绗﹀彿鎸夌収涓瀹氱殑鍏崇郴鈥滀复鏃垛濊瀹氱殑涓绉嶈繍绠楁硶鍒欒繘琛岀殑杩愮畻銆鏂板畾涔鐨勭畻寮忎腑鏈夋嫭鍙风殑锛岃鍏堢畻鎷彿閲岄潰鐨勩備絾瀹冨湪娌℃湁杞寲鍓嶏紝鏄笉閫傚悎浜庡悇绉嶈繍绠楀畾寰嬬殑銆傛垜浠潵鐪嬩竴涓嬩笁绉嶅舰寮忕殑棰樼洰銆備竴銆佺洿鎺ヨ绠楀瀷 渚嬮1锛瀵逛簬浠绘剰鏁癮銆b锛屽畾涔夎繍绠鈥溾槅鈥濓紝浣縜鈽哹=2a脳b ...
绛旓細(2*3)*2 =(2-3+1)*2 =0*2 =0-2+1 =-1
绛旓細4=1*4 4=2*2 (1*4)*3=1*(4*3)(2*2)*3=2*(2*3)a=1,b=4,c=3 a=2,b=2,c=3 (1*4)(1*3)=1*(4+3)=...鍝囬潬闈犻潬,绠楀埌杩欓噷鍙戠幇杩欓鏈夐敊!!(a*b)(a*c)涓嶇瓑浜巃*(b+c)濂戒笉濂= =
