高三数学复习资料全文

高三数学复习资料

  1.进行集合的交、并、补运算时,不要忘了全集和空集的特殊情况,不要忘记了借助数轴和文氏图进行求解.


  2.在应用条件时,易A忽略是空集的情况

  3.你会用补集的思想解决有关问题吗?

  4.简单命题与复合命题有什么区别?四种命题之间的相互关系是什么?如何判断充分与必要条件?

  5.你知道“否命题”与“命题的否定形式”的区别.

  6.求解与函数有关的问题易忽略定义域优先的原则.

  7.判断函数奇偶性时,易忽略检验函数定义域是否关于原点对称.

  8.求一个函数的解析式和一个函数的反函数时,易忽略标注该函数的定义域.

  9.原函数在区间[-a,a]上单调递增,则一定存在反函数,且反函数也单调递增;但一个函数存在反函数,此函数不一定单调

  10.你熟练地掌握了函数单调性的证明方法吗?定义法(取值,作差,判正负)和导数法

  11.求函数单调性时,易错误地在多个单调区间之间添加符号“∪”和“或”;单调区间不能用集合或不等式表示.

  12.求函数的值域必须先求函数的定义域。

  13.如何应用函数的单调性与奇偶性解题?①比较函数值的大小;②解抽象函数不等式;③求参数的范围(恒成立问题).这几种基本应用你掌握了吗?

  14.解对数函数问题时,你注意到真数与底数的限制条件了吗?

  (真数大于零,底数大于零且不等于1)字母底数还需讨论

  15.三个二次(哪三个二次?)的关系及应用掌握了吗?如何利用二次函数求最值?

  16.用换元法解题时易忽略换元前后的等价性,易忽略参数的范围。

  17.“实系数一元二次方程有实数解”转化时,你是否注意到:当时,“方程有解”不能转化为。若原题中没有指出是二次方程,二次函数或二次不等式,你是否考虑到二次项系数可能为的零的情形?

  18.利用均值不等式求最值时,你是否注意到:“一正;二定;三等”.

  19.绝对值不等式的解法及其几何意义是什么?

  20.解分式不等式应注意什么问题?用“根轴法”解整式(分式)不等式的注意事项是什么?

  21.解含参数不等式的通法是“定义域为前提,函数的单调性为基础,分类讨论是关键”,注意解完之后要写上:“综上,原不等式的解集是……”.

  22.在求不等式的解集、定义域及值域时,其结果一定要用集合或区间表示;不能用不等式表示.

  23.两个不等式相乘时,必须注意同向同正时才能相乘,即同向同正可乘;同时要注意“同号可倒”即a>b>0,a<0.

  24.解决一些等比数列的前项和问题,你注意到要对公比及两种情况进行讨论了吗?

  25.在“已知,求”的问题中,你在利用公式时注意到了吗?(时,应有)需要验证,有些题目通项是分段函数。

  26.你知道存在的条件吗?(你理解数列、有穷数列、无穷数列的概念吗?你知道无穷数列的前项和与所有项的和的不同吗?什么样的无穷等比数列的所有项的和必定存在?

  27.数列单调性问题能否等同于对应函数的单调性问题?(数列是特殊函数,但其定义域中的值不是连续的。)

  28.应用数学归纳法一要注意步骤齐全,二要注意从到过程中,先假设时成立,再结合一些数学方法用来证明时也成立。

  29.正角、负角、零角、象限角的.概念你清楚吗?,若角的终边在坐标轴上,那它归哪个象限呢?你知道锐角与第一象限的角;终边相同的角和相等的角的区别吗?

  30.三角函数的定义及单位圆内的三角函数线(正弦线、余弦线、正切线)的定义你知道吗?

  31.在解三角问题时,你注意到正切函数、余切函数的定义域了吗?你注意到正弦函数、余弦函数的有界性了吗?

  32.你还记得三角化简的通性通法吗?(切割化弦、降幂公式、用三角公式转化出现特殊角.异角化同角,异名化同名,高次化低次)

  33.反正弦、反余弦、反正切函数的取值范围分别是

  34.你还记得某些特殊角的三角函数值吗?

  35.掌握正弦函数、余弦函数及正切函数的图象和性质.你会写三角函数的单调区间吗?会写简单的三角不等式的解集吗?(要注意数形结合与书写规范,可别忘了),你是否清楚函数的图象可以由函数经过怎样的变换得到吗?

  36.函数的图象的平移,方程的平移以及点的平移公式易混:

  (1)函数的图象的平移为“左+右-,上+下-”;如函数的图象左移2个单位且下移3个单位得到的图象的解析式为y=2(x+2)+4-3,即y=2x+5.

  (2)方程表示的图形的平移为“左+右-,上-下+”;如直线左移2个个单位且下移3个单位得到的图象的解析式为2(x+2)-(y+3)+4=0,即y=2x+5.

  (3)点的平移公式:点P(x,y)按向量平移到点P(x,y),则x=x+hy=y+k.

  37.在三角函数中求一个角时,注意考虑两方面了吗?(先求出某一个三角函数值,再判定角的范围)

  38.形如的周期都是,但的周期为。

  39.正弦定理时易忘比值还等于2R。


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