(完整word版)(考研高数)基本初等函数图像与性质.pdf
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1、(高数)基本初等函数图像与性质1.函数的五个要素:自变量,因变量,定义域,值域,对应法则2.函数的四种特性:有界限,单调性,奇偶性,周期性3.每个函数的图像很重要一、幂函数axy(a 为常数)最常见的几个幂函数的定义域及图形1.当 a 为正整数时,函数的定义域为区间(,)x,他们的图形都经过原点,并当a1 时在原点处与x轴相切。且a 为奇数时,图形关于原点对称;a 为偶数时图形关于y轴对称;2.当 a 为负整数时。函数的定义域为除去x=0 的所有实数。3.当 a 为正有理数mn时,n为偶数时函数的定义域为(0,),n为奇数时函数的定义域为(,)。函数的图形均经过原点和(1,1);如果mn图形于
2、x轴相切,如果mn,图形于y轴相切,且m为偶数时,还跟y轴对精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页,共 4 页 -称;m,n均为奇数时,跟原点对称。4.当 a 为负有理数时,n为偶数时,函数的定义域为大于零的一切实数;n为奇数时,定义域为去除x=0 以外的一切实数。二、指数函数xay(a是常数且01aa,),),(x图形过(0,1)点,a1 时,单调增加;0a1 时,单调减少。今后用的较多。三、对数函数xyalog(a是常数且01aa,),(0,)x;精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页,共 4 页 -文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J
3、10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:
4、CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 H
5、I3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX
6、7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编
7、码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8
8、 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4
9、ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1四、三角函数正弦函数xysin,),(x,1,1y,余弦函数xycos,),(x,1,1y,正切函数xytan,2kx,kZ,),(y,余切函数xycot,kx,kZ,),(y;五、反三角函数反正弦函数xyarcsin,1,1x,2,2y,反余弦函数xyarccos,1,1x,,0y,精品资料-欢迎下载-欢迎下载 名师归纳-第
10、3 页,共 4 页 -文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档
11、编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q8 HI3J3D8F2H4 ZX7J10R3L1I1文档编码:CV4W3Q6L4Q
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