请教大家一道微分题,多谢!(原题贴错,现纠正,多谢!)3 Y" b" d9 M- F" V8 h0 o1 f7 C
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d [(a+bx)c ] /dx = -kc +s % B, ?' [. B& ~! X4 ]( B
where: only x and c are unknown, others are all known, requiire c = function of x, what is this function? " r# U: G2 [- @7 G P* a* \% A( T5 ^* E% E; I4 @
多谢了! + J8 T0 a( o: K* d) ~ * r# ], N3 ~! R: Z8 E6 n9 r[ 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2 k7 \' u8 k1 Q0 ?* C3 P& Y
d [(a+bx)c ] /dx = -kc +s , A9 Y, W2 e# F6 L& w; r Pwhere: only x and c are unknown, others are all known, requiire c = function of x, what is this function?3 T a& s( c4 z1 F* R$ S- c
这道题难倒了我们全班的人,请赐教! 0 _/ v" C; j2 G: E* ?2 J' n多谢!/ h3 T4 j# u$ b3 O7 l- Z
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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! . Y! B7 L1 e' j# @' }9 c4 b2 X) k/ X' N/ W7 c$ x
[ Last edited by 醉酒当歌 on 2005-4-4 at 11:32 AM ]