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新鲜出炉-26届武汉三调数学试卷

  • 2026-03-11 17:00:23
新鲜出炉-26届武汉三调数学试卷

新鲜出炉-26届武汉三调数学试卷

第7题:奇偶性讨论,需要分区间去掉绝对值,再结合奇函数定义列方程,计算虽不复杂但分类讨论容易遗漏。
第8题:本题是全卷第一个“计算硬骨头”。需要将双曲线上的点坐标,计算向量,再结合等差数列条件建立方程,最后解出a、b关系。计算步骤多,字母运算要求高。
第11题:本题是全卷计算量之最。分段函数定义复杂,需要分析每个区间上的零点、极值点,还要处理参数t的范围。四个选项涉及不等式恒成立、零点个数、极值点个数,每个选项都需要详细计算和讨论,耗时极长。
第13题:平行于x轴的直线交两条抛物线,利用焦半径公式建立方程,求出坐标,再计算四边形面积。计算步骤较多,但思路清晰。
第14题:给出正弦型函数图像上的三点共线,且线段长度均为1,求ω。需要结合正弦函数周期性和几何关系,构图难度大
第18题:解析几何压轴题。第(1)问联立曲线与直线求A点坐标;第(2)问求AB中点P,证明|PA|+|PQ|为定值,需要利用垂直关系、中点坐标公式,进行代数变形;第(3)问探究以PQ为直径的圆是否有公切线,需要写出圆的方程,再验证圆心到某直线距离为定值。整个过程字母运算多,需要耐心和细心。
第19题:新定义“完整操作”题,类似洗牌规则。第(1)问按规则模拟,计算简单;第(2)问求概率,需要分析一次操作后得到顺序排列的条件,涉及排列组合计数;第(3)问证明递推不等式B_{n+1} ≤ nB_n + B_{n-1},需要建立操作与排列之间的对应关系,思维抽象,推导严谨。
第6题(概率分布列):连续抛硬币8次,正面得2分,反面得-1分,求期望和方差,考查对E(aX+b)和D(aX+b)的理解。
亮点:
第8题(双曲线+数列):双曲线上的点列,满足向量点积的绝对值和某个三角式都是等差数列,且公差相等,求1/a²+1/b²。
第14题(三角函数+几何):正弦型图像上三点共线,且线段长度相等,求ω。将三角函数的周期性与平面几何结合,构图和计算都有挑战。
第18题第(3)问(存在性探究):是否存在某直线始终与以PQ为直径的圆相切?这相当于探究动圆是否有公切线,需要先求出圆心轨迹和半径变化规律,再验证是否存在定直线满足距离条件。
第19题(新定义操作):“完整操作”规则类似洗牌,第(3)问证明递推不等式,需要建立排列与操作的对应关系,思维抽象,是压轴题的优质设计。
#高三数学试卷解析 #高考备考攻略

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  1. CONNECT:[ UseTime:0.000655s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000742s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000391s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000254s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000492s ]
  6. SELECT * FROM `set` [ RunTime:0.000209s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000531s ]
  8. SELECT * FROM `article` WHERE `id` = 463967 LIMIT 1 [ RunTime:0.005875s ]
  9. UPDATE `article` SET `lasttime` = 1773275569 WHERE `id` = 463967 [ RunTime:0.003929s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000217s ]
  11. SELECT * FROM `article` WHERE `id` < 463967 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000399s ]
  12. SELECT * FROM `article` WHERE `id` > 463967 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000319s ]
  13. SELECT * FROM `article` WHERE `id` < 463967 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.008015s ]
  14. SELECT * FROM `article` WHERE `id` < 463967 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003050s ]
  15. SELECT * FROM `article` WHERE `id` < 463967 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.014228s ]
0.108402s