[求助] 求函数的极值

6楼: Originally posted by leezhangyi at 2013-12-04 09:04:54
楼主的题设条件中，f(x)的不定积分等于1，怎么理解？是不是有积分区间？不然题目本身有问题

2楼: Originally posted by feixiaolin at 2013-12-02 18:48:06
let u=f(x),
T(x)=Integrate(u*(lnc+lng(x)+lnu),dx)/ln2+numda*Integrate(u,dx)
pDT(x)/pDu=Integrate((lnc+lng(x)+lnu+1),dx)/ln2+numda*x
不知对否？

3楼: Originally posted by rumengzhuo at 2013-12-03 13:08:52
不对，谢谢...