+ j- U% q V" t, j& z0 ]- `d [(a+bx)c ] /dx = -kc +s " s9 Y3 F, A' T" ~* Wwhere: only x and c are unknown, others are all known, requiire c = function of x, what is this function? % g8 |* ^ s7 h1 P0 p" S & n6 h- g- x$ r; B/ r2 X多谢了!" V T1 B5 k+ Y5 d6 S* c
; d$ h0 ?: p8 k0 Z# u[ 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! E) j& m. T1 m" g7 b4 c
d [(a+bx)c ] /dx = -kc +s/ T% O8 y; N( ^- ~+ K
where: only x and c are unknown, others are all known, requiire c = function of x, what is this function?: v U( ^5 o+ c7 D! }
这道题难倒了我们全班的人,请赐教!) J8 z) C* d5 C: Q
多谢!2 B# p/ ^8 @7 G ^$ l# w
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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!2 p- u( I$ ^5 v# e% U: `9 a ^4 `( P5 P
1 h+ i/ x% v4 }# c/ E% h7 ?[ Last edited by 醉酒当歌 on 2005-4-4 at 11:32 AM ]