反比例函數(shù)與三角形

PAGEPAGE2/541POAPA

PPy (x

1 1 2 1 2

1 2 xOAAAxA＿1 1 2 22PxyPxyPxyyy9x01 1 12 22n n nYxOPA,1 1P2PxyPxyPxyyy9x01 1 12 22n n nYxOPA,1 1PAA PAAPA2 1 2 3 2 3n n1 nA,邊BCAAAA Axyyy_＿ 1 1 2 n1 n 1 2 nP1DOAP2X3xyB= xCEyE= 12___ CE(DS=Sk=Y

DA Y O X6By= ADC+ S=yCYD O X7y22AB=(A O X B)CyBC 8=x= B50

F A E

P2XAO A1 2 xA9將yx向左平移1個(gè)單位長度后得到aa數(shù)y1x0AxB,xOB2yyaABOx0Bx9A（△kBAOC=x（x值為11y

k(k)BAAx64C12y

k(0)BBDB相x18:等腰B位置,18:等腰B位置,A333B的60．①沿x移a位,Ay6 3xy求a值；A②BO按逆向度00=0B恰好落在Dyk,求k值。xBOxy3Ay6x,AxCCB6Ox4a=((0)B2Bx6Cy5,,數(shù)（,數(shù)點(diǎn)A, ( ),,,則B1xx k220Ox,x1 2第18題2x2x 0C2xy4k(tBBBxSOBC=。17kx31OO30°得到B 否yCxyyCxyYCkyBCDNBMFP0,P2,,α,2y=xk０PＡkBAPO為COM21Axy1y2OAxxx所示作yAＢ,B為二反比例函數(shù)四1已知(13函數(shù)ykx0)像矩DCx,E對(duì)xy

kx0AE．2．2P函數(shù)y1(x0,yx1xAy2xBMxMBE,NyN,BFFE=3已知矩CB4A3．以A所x和y

E建立所示面系．FC個(gè)動(dòng)不C重合)過F反比例函數(shù)yk(k)CE。將xF

C恰好落在Yy B D P 84,反比例函數(shù)y 過矩CBACxyxC,AC21CE,EA E CO A X5系yOGE4(20F。將矩OＦG繞Ｏ逆時(shí)針旋轉(zhuǎn)使Ｆ落yN處得到矩形OMNOF錯(cuò)誤A＝O B x6ＢBx-錯(cuò)誤-1NCD=錯(cuò)誤C的NMkM DAFGP7=錯(cuò)誤ｘxAyPO E X=錯(cuò)誤x〉D連SDO B C x8ACDCx,EDEy＝F,SB= YA D9,CxxE22O B C X0y=x>C,、CE6kA By1OAOxB∥⊥ACC k O xy B,且C3kM DO A x12y6x

4 x x

AB兩設(shè)A坐標(biāo)為x,C B x y長1 1D

和周長1 1正方OBC頂B和正方F頂E都x0E是

y1x14ABy

3AB兩xy作垂線x段S SS 陰影 1 2y15yA

kx

CCBCBSB1S 5O16y=－Oxx

PDA部7１３y

k(x0像.正方ABCDBCxxEBDy標(biāo)_＿＿ ＿_(dá)

k(x0像又AE兩E橫坐x8,OCBxAx,Byy

k(x0,xx4，1 1 ２

x 2 1yyy=1xB DAy=x5/5OCx= ,_＿yyy2BxyC1 2GB0=) =P=⊥) :D等；②PAPB始終等；③PAOB大小不會(huì)發(fā)生變化；④CA＝ 3y1Dy1Dx＞P,D＝,ＢCk是22兩個(gè)Aykykk0