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发表于 2005-4-4 18:43
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Originally posted by 十年移民路 at 2005-4-4 06:36 PM:
, A& P7 X7 M- m! _/ {# b2 v0 Ido you mean it is:
* \4 O! L5 y' U. ~) Q. Z/ {, c, M% G' I F: T& R# k
d { (a+bx) C(x)}/dx = -k C(x) + s
9 ]0 P' a3 `+ u' O/ o
4 D* f+ P8 Q8 r$ \ Y& d1 b1 Fwhere a, b, s are constants, you want to know what is C(x) ?" c" u3 }. ?& R, E
8 `; ^ c) {' D( H6 p9 iif so, this needs to solve the differential equation. please comfirm it fi ... & L1 g- p7 Q/ u4 T+ T
5 i, `' u, V4 E( [ r' i多谢你,你说对了,就是说用x的函数表示c. 也就是 c(x), 多谢你了。请帮忙。 |
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