什么是连续函数 连续函数与可导函数的区别?

2024年11月18日 17:51
有4个网友回答
网友(1):

连续:函数图象犹如一根导线,导电则连续,不导电则不连续
可导:函数连续的前提下,图象是圆滑的则可导,若函数图象上有尖点,则在尖点处左右极限不相等,不可导
因此,可导必连续,但连续不一定可导。

网友(2):

从逻辑上看,连续不一定可导,但是,可导一定连续;
从定义上看,在(a,b)内连续的函数,它在每一点的左右极限都存在且相等,且极限值等于该点的函数值。在(a,b)内的可导函数,它在每一点的左右导数都存在且相等。
从图象上看,连续函数的图象是一条没有间断的曲线。可导函数的图象是一条没有间断,且比较平滑的曲线。

网友(3):

连续函数是计算极限值只要计算函数值就可以解决问题的函数。
连续函数与可导函数的区别:可导必定连续,连续不一定可导。

网友(4):

即在任意一点,函数值与该点左右两侧极限值相等,边是:f(a)=㏕f(x)(x→a)
区别:可导函数必定连续,但是连续函数不一定可导。如y=|x|

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