2020-02-19
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初等函数有哪些?
以下六类函数称为基本初等函数:
(1)常量函数y=c(c为常 数);
(2)幂函数y=xa (a为实数);
(3)指数函数y=ax (a> 0,a≠1);
(4)对数函数y= logax (a> 0,a≠1);
(5)三角函数
y=sinx, y = cos x,
y=tanx, y = cotx;
(6)反三角函数y= arcsinx, y = arccosx, y=arctanx,y=arccotx.
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