@[yinpeichu2021](/user/557463)
by nothing_exe_studio @ 2024-05-06 19:49:54
@[nothing_exe_studio](/user/1108078)
哥们你找个时间学一下高等数学吧,建议看清我在表达什么
by lunjiahao @ 2024-05-06 19:51:15
@[WydnksqhbD_3](/user/753481) ?
by _TCR_ @ 2024-05-06 19:52:17
@[_TCR_](/user/483466) ?
by WydnksqhbD_3 @ 2024-05-06 19:53:02
@[WydnksqhbD_3](/user/753481) 姐你回错人了,你npy在楼上
by _TCR_ @ 2024-05-06 19:53:18
@[nothing_exe_studio](/user/1108078)
显然 $f(x)=\frac{1}{x}$ 定义域为 $(-∞,0)∪(0,+∞)$,注意我的用词是**逼近**而不是取等(本来这个函数就取不到 $x=0$)。
by lunjiahao @ 2024-05-06 19:54:12
@[nothing_exe_studio](/user/1108078) 我说的不严谨,抱歉
应该是趋近……
by _TCR_ @ 2024-05-06 19:54:47
@[lunjiahao](/user/779970) $y=x^{-1}$ 经典反比例函数
by WydnksqhbD_3 @ 2024-05-06 19:56:37
@[_TCR_](/user/483466) 《$1\div0=\infty$》
还有我 npy 是谁你不懂
by WydnksqhbD_3 @ 2024-05-06 19:57:31
@[WydnksqhbD_3](/user/753481)
嗯,确实 $x=0$ 的函数值未定义且无意义
by lunjiahao @ 2024-05-06 19:59:22