请教大家一道微分题,多谢!(原题贴错,现纠正,多谢!) 6 J" ?; x+ g; i, ^6 p : ~5 r. b" U* k$ @d [(a+bx)c ] /dx = -kc +s & O5 E: Y( i, C8 v7 U* ewhere: only x and c are unknown, others are all known, requiire c = function of x, what is this function?" ^$ F% L6 t3 j7 T! l( w5 s
' j3 ~! `. _ ~" x# z7 O7 q多谢了! - |5 m# h2 A" g& U1 p ' H9 E% E7 Q( j6 `[ Last edited by 醉酒当歌 on 2005-4-4 at 11:34 AM ]
对不起,原题贴错了,怪不得这么多高手进来了。原题应该是 # |* |4 l: W9 Xd [(a+bx)c ] /dx = -kc +s2 K3 r4 l/ n& i/ D8 t: ?7 s
where: only x and c are unknown, others are all known, requiire c = function of x, what is this function?/ |1 S) L% q) e" v7 g+ v7 j
这道题难倒了我们全班的人,请赐教!0 L% E3 h: H1 I
多谢! # u1 _. a. k6 ]6 D3 l/ h+ U$ U : W+ ^+ w8 c! c3 K$ Y. ^要求用x的函数来表达c.也就是等式右边不能包含c. 即 c = x 的函数, 所求就是这个函数。多谢!, _ F, A5 ?7 L3 t' p6 p
$ \4 S- S7 G y6 D[ Last edited by 醉酒当歌 on 2005-4-4 at 11:32 AM ]