2022年新人教版高中数学必修4知识点总结 .pdf
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1、_ 精品资料高中数学必修 4 知识点总结第一章:三角函数1.1.1、任意角1、正角、负角、零角、象限角的概念.2、与角终边相同的角的集合:Zkk,2.1.1.2、弧度制1、把长度等于半径长的弧所对的圆心角叫做1 弧度的角.2、rl.3、弧长公式:RRnl180.4、扇形面积公式:lRRnS213602.1.2.1、任意角的三角函数1、设是一个任意角,它的终边与单位圆交于点yxP,,那么:xyxytan,cos,sin2、设点,A xy为角终边上任意一点,那么:(设22rxy)sinyr,cosxr,tanyx,cotxy3、sin,cos,tan在四个象限的符号和三角函数线的画法.正弦线:MP
2、;余弦线:OM;正切线:AT4、特殊角 0,30,45,60,90,180,270 等的三角函数值.0 64322334322sincostan1.2.2、同角三角函数的基本关系式1、平方关系:1cossin22.2、商数关系:cossintan.3、倒数关系:tancot11.3、三角函数的诱导公式(概括为“奇变偶不变,符号看象限”Zk)TMAOPxy_ 精品资料1、诱导公式一:.tan2tan,cos2cos,sin2sinkkk(其中:Zk)2、诱导公式二:.tantan,coscos,sinsin3、诱导公式三:.tantan,coscos,sinsin4、诱导公式四:.tantan,
3、coscos,sinsin5、诱导公式五:.sin2cos,cos2sin6、诱导公式六:.sin2cos,cos2sin1.4.1、正弦、余弦函数的图象和性质1、记住正弦、余弦函数图象:2、能够对照图象讲出正弦、余弦函数的相关性质:定义域、值域、最大最小值、对称轴、对称中心、奇偶性、单调性、周期性.3、会用五点法作图.sinyx在0,2 x上的五个关键点为:30 010-1 2022(,)(,)(,)(,)(,).1.4.3、正切函数的图象与性质1、记住正切函数的图象:1-1y=cosx-32-52-727252322-2-4-3-2432-oyx1-1y=sinx-32-52-727252
4、322-2-4-3-2432-oyx文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I1
5、0T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6
6、L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L
7、2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4
8、I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:C
9、O6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB
10、6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5_ 精品资料y=tanx322-32-2oyx2、记住余切函数的图象:y=cotx3222-2oyx3、能够对照图象讲出正切函数的相关性质:定义域、值域、对称中心、奇偶性、单调性、周期性.周期函数定义:对于函数xf,如果存在一个
11、非零常数T,使得当x取定义域内的每一个值时,都有xfTxf,那么函数xf就叫做周期函数,非零常数T 叫做这个函数的周期.文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I
12、10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO
13、6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6
14、L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P
15、4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:
16、CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 H
17、B6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5_ 精品资料图表归纳:正弦、余弦、正切函数的图像及其性质xysinxycosxytan图象定义域RR,2|Zkkxx值域-1,1-1,1 R最值
18、maxmin2,122,12xkkZyxkkZy时,时,maxmin2,12,1xkkZyxkkZy时,时,无周期性2T2TT奇偶性奇偶奇单调性Zk在2,222kk上单调递增在32,222kk上单调递减在2,2kk上单调递增在2,2kk上单调递减在(,)22kk上 单 调 递增对称性Zk对称轴方程:2xk对称中心(,0)k对称轴方程:xk对称中心(,0)2k无对称轴对称中心,0)(2k1.5、函数xAysin的图象1、对于函数:sin0,0yAxB A有:振幅 A,周期2T,初相,相位x,频率21Tf.2、能够讲出函数xysin的图象与sinyAxB的图象之间的平移伸缩变换关系.先平移后伸缩:
19、sinyx平移|个单位sinyx(左加右减)横坐标不变sinyAx纵坐标变为原来的A倍纵坐标不变sinyAx文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5
20、文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T2M9 HB6L2M7O1V4 ZG5P4I10T6E5文档编码:CO6L2T2T
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