example

example

所有跟贴·加跟贴·新语丝读书论坛

送交者: blobfish 于 2010-07-23, 16:24:16:

回答: 我算了一下，方舟子的智力曲线和道德曲线求了3次倒数后还在他们的曲线上面由一事无成于 2010-07-23, 13:04:32:

FZZ 's 智力曲线和道德曲线 is 10+exp(x)
yours is 9+exp(x)

the third order derivatives of them are:

FFZ;s 0+exp(x)
YOurs 0+exp(x)
they are equal