∫AB∨DC∠D = 90,
∴∠D=∠ABM=∠BMD=90,
∴四邊形ADMB是長方形,
∴BM=AD,DM=AB=3,
∴CM=CD-DM=6-3=3,
在Rt△BMC中,
BC2?CM2=4,
∴ad=4;
(2)在Rt△ADE中,AE2=AD2+DE2,
BF = x,
∴AF=AB+BF=3+x,
∫AE = AF = 3+x,DE=y,
∴(3+x)2=y2+16,
∴y=x2+6x?7,
當e和d重合且y=0時,則x=AD-AB=1,
當E和C重合時:AC=AD2+CD2=213,
∴x=213-3,
∴1≤x≤213-3,
∴y's與x的泛函關系是y=x2+6x?7.自變量X的取值範圍為1≤x≤2。妳對這個回答有何評論?收起評論//高質量或滿意度或特殊類型或推薦答案dot time window . iperformance & window . iperformance . mark(' c _ best ',+newdate);律師推薦服務:如果您的問題沒有解決,請詳細描述您的問題,通過百度法律Pro進行免費專業咨詢。其他類似問題2012-05-20。如圖,在梯形ABCD中,AD∨BC,AB=DC=3,P是BC上的壹點,PE∨AB是E點的AC,PF∨CD在f點與BD相交如圖72012-01-20。在梯形AB=DC中,AB//DC和E是BC的中點,AE和DC的延長線相交於F點,連接AC,BF.132012-02。垂足為E點,DE延伸至F點,則EF = DE,1942011-06-25。如圖,在直角梯形AB=2CDE中,F AB ||| DC,AB ⊥ BC,∠ A = 60,AB = 2C。AD∨BC,E,F分別是AB和DC邊的中點,AB=4,∠ B = 60,(1)求E點到BC邊的距離;(232013-05-11如圖所示,已知在梯形ABCD中,AC∨BC,AB=DC=3,P是BC上面的壹點,PE∨AB穿過AC到E,PF∨CD穿過BD到F,42061;。P是BC上面的壹個點,PE∨AB穿過AC到E,PF∨CD穿過BD到F,當P在BC邊上移32013-10-03時,如圖,在梯形ABCD中,AD∨BC,AB=DC,對角線AC和BD交叉點O,對角線AC和BD交叉點O. & gt為妳推薦:特別推薦F.context('cmsRight ',[{ ' URL ':'/d 01373 f 082025 AAF 511aa 256 e 9 edab 64034 f 1a 07?x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto ',' contractId':'A24KA00562 ',},{ ' URL ':/builder/bjh-activity/articlesTask?taskId = 1598082 & aside = 0 & footer = true & from = 0 ',' src ':'/203 FB 80 e 7 bec 54 e 773 ea 0680 ab 389 b 504 fc 26 a2d?x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto ',' contractId ':' ',},{ ' URL ':/s?word = % E6 % AC % A7 % E6 % B4 % B2 % E6 % 9D % AF & sa = searchpromo _ ozb _ zhidao _ tuijian ',' src ':'/3 BF 33 a 87 e 950352 AAF 5 df 4954143 fbf2b 2118 b6b?x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto ',' contractId ':' ',}]);電動車的價格降了很多次。質量有保證嗎?「網絡廁所」會有什麽影響?華強北的二手手機靠譜嗎?為什麽癌癥治療費用越來越高?我推薦f.context ('recbrand ',[{ " img ":" \/86d 6277 f 9 e2f 07083523 f 69 DFB 24 b 899 a 901 f20d?x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto "," url":"/hm.js?6859 ce 5a af 00 FB 00387 e 6434 E4 FCC 925 ";var s = document . getelementsbytagname(" script ")[0];s.parentNode.insertBefore(hm,s);})();window . TT = 1720434143;