2008年廣東職高高考數(shù)學(xué)試卷A

AC.D.2008年廣東省高等職業(yè)院校招收中等職業(yè)學(xué)校畢業(yè)生考試222)=數(shù)學(xué)2cos22tancosD.tanB.C.cos4.a,b,是實(shí)數(shù)，且ab,則下列不等式正確的是2B.C.22D.22x1logx)y3111(([[,)D.B.C.222與ab30,且|a2sin15,|b4cos15,則ab5312233B.C.D.2x2y2231b,B{x|x則ABA255b3458D.B.C.(B.C.D.axbxc(a,b,的圖像如圖y2(x)x4x3000f2B.D.0C.(,0][0,)(,2][2,)B.C.D.2px(p0),則其焦點(diǎn)坐標(biāo)是y2a}aaa24qppp)2p(((0,)D.123B.C.n222或3或3或4或4D.B.B.C.y1xy相切的是x22log83log2y20xy220xy20xy220D.3xB.C.log43log234D.C.R,"x"|x的33、x(x)13cos2x,xRf是B.CD.,b,357,則B.aabcbcacbcbabcaD.aB.C.55anSn2n,則a22xnnn(x)(x2).令aaf(a，又baa,nN.設(shè)fx21n1nnnn1（2），b,且a//b,則aba1{是等差數(shù)列；223xyaxyna}ABC中，,B,C的對(duì)邊分別為a,b,c,若A60，anb}n.bcnxx的圖像La(平移到L',則L'y2數(shù)4題題ABC為銳角三角形，B,C的所對(duì)邊分別為b,，且B45，xy2x2y2x20設(shè)M22b2,c3CABCS.ABC(mR).Om9x6x12.23x2x10(3xx0即21解(xx得1x2008年廣東省高等職業(yè)院校招收中等職業(yè)學(xué)校畢業(yè)生考試39x6x1(3x所以9x6x129x6x14222與2159x6x12x.{|1}2x31C23456789DBCABDCBBAADDC(3x22即|3x1|2556n15yx6x122523x12.即419x6x12x.{|1}2x3bcc323由正弦定理,得sinCsinBsin45sinBsinCb22a由af(a得an2CC60annnn1111A2(aan),且1aan2a1n1n1aa11212n1nSA66sin(45)211{是首項(xiàng)為，公差為的等差數(shù)列。故6a2(sin45cos30cos45sin30)n21n1233aS.n4ABC2故an1naa2(aa)bnnn1nn1Sbbb2(aa)2(aa)2(aa)9x6x142n12n1223nn122n2(aa)).n2n21n12nS.n2nxy2x2y20(x(y2）22222曲線是以點(diǎn)(為圓心，為半徑的圓。已知、N關(guān)于直線xmy20對(duì)稱(chēng)，則圓心(在直線xmy2上1m20m1.即已知、N兩點(diǎn)坐標(biāo)分別為(x,y),(x,y)MNyxMNyx.1122、x代入圓的方程得2x2(2b)xbb20將y22①,x為方程b解得|22x12b2b2xxbxx.且②21212MN為直徑的圓過(guò)點(diǎn)，所以O(shè)MON,即有xxyy0③1212yy