《2021年初三数学上学期期末考试试卷-人教版.pdf》由会员分享，可在线阅读，更多相关《2021年初三数学上学期期末考试试卷-人教版.pdf（8页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、学习必备欢迎下载初三数学上学期期末考试试卷一、填空题：（每空 3 分，共 42 分）1.抛物线22(1)2yx的对称轴是；顶点的坐标是；2.已知正比例函数ykx 与反比例函数3yx的图象都过A（m，1），则 m，正比例函数的解析式是；3.一个植树小组共有6 名同学，其中有2 人各植树20 棵，有 3 人各植树16 棵，有 1 人植树 14 棵，平均每人植树；4.一条弦把圆分为23 的两部分，那么这条弦所对的圆周角度数为；（第 8 题）（第 9 题）（第 11 题）5.如果两圆的半径分别为1 和 2，圆心距为5，那么一条外公切线的长是；6.若正多边形的一个内角等于140，则它是正边形；7.如果半
2、径为5 的一条弧的长为3，那么这条弧所对的圆心角为；8.如图，三个半径为r的等圆两两外切，且与ABC的三边分别相切，则ABC的边长是；9.某人清晨在公路上跑步，他距某标志牌的距离S（千米）是跑步时间t（小时）的一次函数如图。若该函数的图象是图中的线段BA，该一次函数的解析式是；10.与 半 径 为R的 定 圆O外 切，且 半 径 为r的 圆 的 圆 心 的 轨 迹是；11.如图，有两个同心圆，大圆的弦AB与小圆相切于点P，大圆的弦CD经过点 P，且 CD13，PD 4，两圆组成的圆环的面积是；12.统计某校初三年级期中考试数学成绩的频率分布直方图如图所示，从该图可以看出这CBA.ABCDOA1
3、234O5205st千米小时()()49.5 59.5 69.5 79.5 89.5 99.5 分数频率/相距0.040 0.028 0.020 0.0080.004第 12 题|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 1 页，共 8 页学习必备欢迎下载次考试数学成绩的及格率等于。（学生分数都取整数，60 分以下为不及格）。二、选择题：（每题 2 分，共 22 分）13.若圆锥的母线长为4cm，底面半径为3cm，则圆锥的侧面展开图的面积是（）（A）2cm6；（B）2cm12；（C）2cm18；（D）2cm24；14.一个正方形的内切圆半径，
4、外接圆半径与这个正方形边长的比为（）（A）122；（B）122；（C）124；（D）224；15.函数 ykx 和kyx的图象是（）（A）（B）（C）（D）16.某部队一位新兵进行射击训练，连续射靶5 次，命中的环数分别是0，2，5，2，7。这组数据的中位数与众数分别是（）（A）2，2；（B）5，2；（C）5，7；（D）2，7；17.若二次函数2yaxbxc的图象如图所示，则点（ab，ac）在（）（A）第一象限；（B）第二象限；（C）第三象限；（D）第四象限；18.一个圆锥的底面半径为10，母线长 30，则它的侧面展开图（扇形）的圆心角是（）（A）60；（B）90；（C）120；（D）150；
5、19.如图，O中，弦 AD BC，DADC，AOC 160，则 BCO 等于（）（A）20；（B）30；（C）40；（D）50；（第 17 题）（第 19 题）（第 20 题）（第 23 题）20.如图，正比例函数)0(kkxy与反比例函数xy1的图象相交于A、C 两点，过A作x轴的垂线交x轴于 B，连结 BC，若 ABC面积为 S，则（）OCBAyxOCBADOxy|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 2 页，共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2
6、HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10
7、ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档
8、编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F
9、2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P1
10、0 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3
11、文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X
12、3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载（A）S1；（B）S2；（C）S3；（D）S21；21.在面积相等的两块田里种植了甲、乙两种水稻，并记录到这两块田在连续10 年中的年产量。现在要比较这两种水稻产量的稳定性，为此应（）（A）比较它们的平均产量；（B）比较它们的方差；（C）比较它们的最高产量；（D）比较它们的最低产量；22.同圆的内接正十边形和外切正十边形的周长之比等于（）（A）sin18 ；（B
13、）cos18；（C）sin36；（D）cos36；23.设计一个商标图案：先作矩形ABCD，使 AB 2BC，AB 8，再以点A 为圆心、AD的长为半径作半圆，交BA的延长线于F，连 FC。图中阴影部分就是商标图案，该商标图案的面积等于（）（A）48；（B）416；（C）38；（D）316；24.如图，正比例函数)0(kkxy与反比例函数xy1的图象相交于A、C 两点，过A作x轴的垂线交x轴于 B，连结 BC，若 ABC面积为 S，则（）（A）S1；（B）S2；（C）S3；（D）S21；25.在面积相等的两块田里种植了甲、乙两种水稻，并记录到这两块田在连续10 年中的年产量。现在要比较这两种水
14、稻产量的稳定性，为此应（）（A）比较它们的平均产量；（B）比较它们的方差；（C）比较它们的最高产量；（D）比较它们的最低产量；26.同圆的内接正十边形和外切正十边形的周长之比等于（）（A）sin18 ；（B）cos18；（C）sin36；（D）cos36；27.设计一个商标图案：先作矩形ABCD，使 AB 2BC，AB 8，再以点A 为圆心、AD的长为半径作半圆，交BA的延长线于F，连 FC。图中阴影部分就是商标图案，该商标图案的面积等于（）（A）48；（B）416；（C）38；（D）316；|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 3 页
15、，共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG
16、5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5
17、G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8
18、F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:
19、CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 H
20、A5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 Z
21、D8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载三、计算题或证明题：28.（本题 9 分）已知：直线1l、2l分别与 x 轴交于点A、C，且都经过y 轴上一点 B，又1l的解析式是y x3，2l与 x 轴正半轴的夹角是60。求：直线2l的函数表达式；ABC的面积；29.（本题 9 分
22、）已知：如图，O和 A 相交于 C、D，圆心A在 O上，过 A 的直线与CD、A、O分别交于F、E、B。求证：AFC ACB；2AEAF AB；四、综合题：30.（本题 9 分）已知：如图，在RtABC中，斜边AB 5 厘米，BC a厘 米，AC b 厘 米，a b，且a、b 是 方 程2(1)40 xmxm的两根，求 a 和 b的值；若 AB C与 ABC开始时完全重合，然后让 ABC固定不动，将A BC以1 厘米/秒的速度沿BC所在的直线向左移动。)设 x 秒后 ABC 与 ABC 的重叠部分的面积为y 平方厘米，求y 与 x 之间的函数关系式,，并写出x 的取值范围；ABCMABC.AB
23、CDEFO|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 4 页，共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8
24、F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:
25、CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 H
26、A5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 Z
27、D8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编
28、码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2
29、 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载)几秒后重叠部分的面积等于38平方厘米？31.（本题9 分）已知抛物线qpxxy221与x轴相交于不同的两点A（1x,0）,
30、B（2x，0），（B在 A的右边）又抛物线与y轴相交于C点，且满足451121xx，求证：054qp；问是否存在一个O，使它经过A、B两点且与y轴相切于C点，若存在，试确定此时抛物线的解析式及圆心O的坐标，若不存在，请说明理由。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 5 页，共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:C
31、G5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA
32、5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD
33、8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码
34、:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2
35、HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10
36、ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档
37、编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载 参考答案 一、填空题：1、x=-1 (-1,2)2、3 y=31x 3、17 棵4、72或 1085、2 6、九7、1088、r)13(29、S=3t+5(0 t 5)10、nS0为圆心(R+r)为半径的圆11、3612、92%二、13、B 14、B 15、C 16、A 17、D 18、C 19、B20、A 21、B 22、B 23、A 三、24、（1）1：y=-x-3 2与 y 轴交于同一点B B(0,-3)又2与 x 轴正半轴的夹角是60 MCx=60 即 OCB=60 在 RtBOC中 OB=
38、3 OC=B tg30=3333C(3,0)令：y=kx-3 0=33k k=3y=33x (2)又1与 x 轴交于 A，对于 y=-x-3中当 y=0 时 x=-3 A(-3,0)AC=33)3(323393)33(21ABCS25、证：连结AD（1）AC=AD=AE AC=AD ACD=D D=B ACD=B 2=2 AFC ACB（2）ACAFABAC即 AC2=AFAB 26、ABC是 Rt且 BC=a，AC=b，AB=5 （ab）又 a、b 是方程的两根|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 6 页，共 8 页文档编码:CG5O
39、8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8
40、G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8
41、H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG
42、5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5
43、G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8
44、F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:
45、CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载2504010)4(4)1(222bambambamm(a+b)2-2ab=25(m-1)2-2(m+4)=25 (m-8)(m+4)=0 m1=8 m2=-4 经检验 m=-4不合舍去m=8 x2-7x+12=0 x1=3 x2=4 a=4，b=3(2)ABC以
46、1 厘米/秒的速度沿BC所在直线向左移动。x 秒后 BB=x 则 BC=4-x CM AC BC M BCA ACCMBCCB)4(43xCM)4(23)4(21xxxySMCB即2)4(83xyy=63832xx (0 x4)当 y=83时2)4(83x=83x1=3 x2=5(不合舍去)经过 3 秒后重叠部分的面积等于83平方厘米。27、（1）证明：抛物线y=qpxx221与 x 轴交于不同的两点A(x1,0)，B(x2,0)(x1x2)451122702142121212xxqxxxxqp|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 7
47、页，共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:C
48、G5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA
49、5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD
50、8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码