数学-广东省广州市2025届高三一模试题和解析

【答案】B是【答案】DEQ\*jc3\*hps23\o\al(\s\up2(---→),AF)EQ\*jc3\*hps23\o\al(\s\up2(--),A)EQ\*jc3\*hps23\o\al(\s\up2(--),A)【答案】B【答案】D22)2【答案】B 3232EQ\*jc3\*hps23\o\al(\s\up2(–),B)为32nx+3f2x)fx>fx2C.f(2+x)=f(2-x)2【解析】fx定义域2):fx<fx2)B错.21<4-x2):fx1<f(4-x2)fx1+fx2)<f(4-x2)+对.22:223EQ\*jc3\*hps23\o\al(\s\up2(–––),Q)EQ\*jc3\*hps23\o\al(\s\up2(–––→),pt)EQ\*jc3\*hps23\o\al(\s\up2(–––→),pt)EQ\*jc3\*hps23\o\al(\s\up2(––––→),tpt)EQ\*jc3\*hps23\o\al(\s\up2(––––→),tQt)EQ\*jc3\*hps23\o\al(\s\up2(–––),Q)EQ\*jc3\*hps23\o\al(\s\up2(–––→),pt)下面解答各个选项. 2代入四个点可知是最大值是最小值)____种.9BD1212EQ\*jc3\*hps16\o\al(\s\up4(2),1)EQ\*jc3\*hps16\o\al(\s\up4(2),2)EQ\*jc3\*hps16\o\al(\s\up4(2),3)D运动路径的长度为____.EQ\*jc3\*hps16\o\al(\s\up4(2),1)EQ\*jc3\*hps16\o\al(\s\up4(2),2)EQ\*jc3\*hps16\o\al(\s\up4(2),3)22222222)2:轨迹长为应填:2【解析】:2-22 【解析】:EQ\*jc3\*hps23\o\al(\s\up2(–),D)EQ\*jc3\*hps23\o\al(\s\up0(–),n)EQ\*jc3\*hps23\o\al(\s\up0(–→),1)EQ\*jc3\*hps23\o\al(\s\up2147483647(–),n)EQ\*jc3\*hps23\o\al(\s\up2147483647(–→),2)*52525353；【解析】【解析】1)2)12222.y1y2而EQ\*jc3\*hps16\o\al(\s\up4(4),2)EQ\*jc3\*hps16\o\al(\s\up4(2),2)22EQ\*jc3\*hps16\o\al(\s\up4(3),2)EQ\*jc3\*hps16\o\al(\s\up4(2),2)EQ\*jc3\*hps16\o\al(\s\up4(3),2)EQ\*jc3\*hps16\o\al(\s\up4(2),2)32x2:2fy2=0.1212*1【解析】21且{fai→至少要有两个不等的正数根.:1+12EQ\*jc3\*hps16\o\al(\s\up4(2),2)EQ\*jc3\*hps19\o\al(\s\up4(n),2)21EQ\*jc3\*hps16\o\al(\s\up5(2),1)3EQ\*jc3\*hps16\o\al(\s\up5(3),1)EQ\*jc3\*hps19\o\al(\s\