函数的图像(含解析)

经典word整理文档，仅参考，双击此处可删除页眉页脚。本资料属于网络整理，如有侵权，请联系删除，谢谢！一、必备知识：；．．由a．由b．．、x．y＝>0)y＝)时)时)；y＝y＝)时)时)．xxx1/27x在yyx在y．1)右b下y轴x轴mA倍②倍a二、应用题型yf(|x|)yf(x)）yyyyyOxOxOxOxOx(2)(1)(3)(4)A.））））ya,0a1,1b0）xbx<<y=）y2|x|1）2/27yf()f(x)y）12(gh),(gh),gh()21(1)fxgfxxh））1f(x)）1x0xx）x,x03．．．．3/27fxe1x2e）yxcosxsinx）xy）lnx）1且xfxxxx0（）x4/27sinxfx）x211）f(x)lnxx22(x)xlnxf）f()(xe2x）5/27kbxykxby）)x1f()xa0,b0ab）byxaxyxa0a1，ya，，）aaxcx,gx2c,a0fx）3223yax，y01且asinax5）a6/27．x,）,b()log()afxxbxfab（）ABCD用SS12t）xl经M是CDP,B,C,MP1yPxAPMyfx.CDMPABBD1111111MNBPx，MNyyfx()y.ABCABC.l与AB相交且lABl2y点Alx则）APAPlOddfl＝（()三、课外作业：）fx1elnxfx）yxxxye9/27eexxxy）eex2xy2）x,a0,ab义运算“为：ab.若函数()(1)，则该函数的图象大致是（fxxx2,a≥0abylogx(|||)yax2bxab与）ba）10/27．H(hft.)Th．11/27解析二、应用题型yf(|x|)yf(x)）yyyyyOxOxOxOxOx(2)(1)(3)(4)A.）C）））f(|x|)0y。ya,0a1,1b0）xbCyaxyayaxbxayxb，yaxyaxyxaya于yyxbx．x<<y=）12/27Dxaxaxxxaxxyax0yax0为DDy2|x|1）Cxx1yx1C0y时x022yf()f(x)y）12Cylogu,ufxufx121时，ufxu时，ufxu1．(gh),(gh),gh()21(1)fxgfxxh）13/27Bf(x)x2,x0x0fx(1)yfx()）C1,0x1f(x)x.C,x1x1f(x)）1xCfxfxfx；yCR0x2x）x,x0314/27．．．．C0(0,1)、xx)x121fx()0()[0,xx3fxe1x2e）C；20D．(x)fyxcosxsinx）C,xyxcosxsinxy,1yDx2除Cxy）lnx15/27D(0,1)1.xlnxxlnx'lnx1y00xe，ylnxlnx220,1,1.e,xex(0,1)1.e令y0y在上lnxD）Af00fx由．1fxxxx0（且x）xD(x)f(x)f(x)、fx1(x)0fC。16/27sinxfx）x21A2x1fxsinsinfxxxfxfx,,又Rx210xπsinx0(x)0当fA1）f(x)lnxx22B1x2x0,fx11(x)lnxxfxfxxf则，22xx0fxB01xfxx1x(x)xlnxf）A1fxB17/27f()(xe2x）Bf'()(x2)e0,22x．2kbxykxby）B)xf()x1aba0,b0）bBgx1logloglogxxxaab1bb1aayx．yxaxyxa0a1，ya，，）a18/27C10a1a1a0a10a10a1a1axcx,gx2c,a0fx322）3BAgxy00aAafxgxyax，y01且asinax5a）C2sinaxaB21Ayaxa1yTayax01yaxysinaxT21a,Caaax0a1yaD01ya1sinaxTa19/27ysinaxTa．x,）0a1a1和D,b()log()afxxbaD()log()a(x)(xa)(xb)xfab（）ABCDA1xRb．用SS12t）BSSS122SSS221:xt(0ta)xlOy经f(t)Cf(t)yP,B,C,MP1M是CDABCDy()yfxPxAPM.CDMPABA21/27P在0x1yxP在1x2111131P在442ySS1(x(2x)x2222ABCMABPCMP12xy(2.5)1xx2BDP1111111MN，MNyyfx(())BMNABCDPBD点从，1111AC0ACM.当,111yMNEFHBPBcosDBDxx与x。y133DC11AB11NFPMDCHAEBy.BxABCABC相交且lABl2.l与AByf(x)y点Alx则）CfAPAP11(x)x2xxAB{|0}222llO（()DxxPOAxx,(0)0xxd2xxd)D．22三、课外作业：）23/27DyxCD中2yfx1efxx）D1ex1fx0x1fxelnxxlnxxyfx11fxyxxyexAxxxf(x)f(x)(x)fecosecos()exxx当x2()0f22eexxxy）eex24/27Ae122xy1f(0)0e12xe12x2xy2）xAx2,4x,a0,abb()(1)，则该函数的图象大致是（义运算“为：a.若函数fxxx2,a≥0abD,1xxx2，在同一坐标系中画出函数图象，即选f(x)2,x12x1ylogx(|||)yax2bxab与）b