请教大家一道微分题,多谢!(原题贴错,现纠正,多谢!)+ ?) D/ W# [* g0 j" x% g) h
- ?8 J4 `9 I7 \* ]d [(a+bx)c ] /dx = -kc +s ) }. w" m5 b, C& w2 n1 b& O
where: only x and c are unknown, others are all known, requiire c = function of x, what is this function? 4 @) G9 j: v0 y" M' S5 {& d3 d) ^% {% |' P6 q1 M" d" c# X
多谢了!3 D6 r! c, l4 R& n2 |- Y
* \" B; H" v/ _! |. Z- w
[ 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 $ w4 g- \; I3 hd [(a+bx)c ] /dx = -kc +s % k' T' K: U, Owhere: only x and c are unknown, others are all known, requiire c = function of x, what is this function?4 O$ ~" v8 x6 `: L
这道题难倒了我们全班的人,请赐教! 1 i% F) I3 g' ?多谢!! Y: | |4 q% w
* _. x* N* |4 \
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! : D% {" L" q+ G1 R4 v+ n ! M0 n, o: @7 R( P[ Last edited by 醉酒当歌 on 2005-4-4 at 11:32 AM ]