高中数学常用公式及结论 1 元素与集合的关系:file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image002.gif,file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image004.gif.file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image006.gif 2 集合file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image008.gif的子集个数共有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image010.gif 个;真子集有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image012.gif个;非空子集有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image012.gif个;非空的真子集有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image015.gif个. 3 二次函数的解析式的三种形式: (1) 一般式file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image017.gif; (2) 顶点式file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image019.gif;(当已知抛物线的顶点坐标file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image021.gif时,设为此式) (3)零点式file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image023.gif;(当已知抛物线与file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image025.gif轴的交点坐标为file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image027.gif时,设为此式) (4)切线式:file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image029.gif。(当已知抛物线与直线file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image031.gif相切且切点的横坐标为file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image033.gif时,设为此式) 4 真值表: 同真且真,同假或假 5 常见结论的否定形式; 原结论 | | | | | | | | | | | | | | 至少有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image035.gif个 | 至多有(file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image037.gif)个 | | | 至多有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image035.gif个 | 至少有(file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image039.gif)个 | 对所有file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image025.gif,成立 | 存在某file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image025.gif,不成立 | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image042.gif或file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image044.gif | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image046.gif且file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image048.gif | 对任何file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image025.gif,不成立 | 存在某file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image025.gif,成立 | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image042.gif且file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image044.gif | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image046.gif或file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image048.gif |
6 四种命题的相互关系(下图):(原命题与逆否命题同真同假;逆命题与否命题同真同假.)
| | | | | | | | | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image049.gif | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image050.gif | | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image051.gif | | | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image052.gif | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image050.gif | | |
原命题 互逆 逆命题 file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image053.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image054.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image055.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image056.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image057.gif若p则q 若q则p file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image058.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image049.gif 互 互 互 为 为 互 否 否 逆 逆 file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image059.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image051.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image051.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image060.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image051.giffile:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image051.gif 否 否 否命题 逆否命题 file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image061.gif若非p则非q 互逆 若非q则非p
| | | | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image062.gif | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image060.gif | | | | file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image063.gif |
充要条件: (1)、file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image065.gif,则P是q的充分条件,反之,q是p的必要条件; (2)、file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image065.gif,且q ≠> p,则P是q的充分不必要条件; (3)、p ≠> p ,且file:///C:/Users/LC/AppData/Local/Temp/msohtml1/01/clip_image067.gif,则P是q的必要不充分条件; 4、p ≠> p ,且q ≠> p,则P是q的既不充分又不必要条件。 7 函数单调性:
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