请教大家一道微分题,多谢!(原题贴错,现纠正,多谢!) 1 b" L; F# [- x% S. s' H % \% b5 c; r! |5 p4 S; d! sd [(a+bx)c ] /dx = -kc +s * c; Q+ U3 E9 T8 U# @& P5 lwhere: only x and c are unknown, others are all known, requiire c = function of x, what is this function? . x: D9 r+ O8 ]/ k + N4 j/ ^ l3 J( E; h+ v- Y多谢了! , {# `( ^: p: [2 Z; G# C5 E8 c ! [: r$ I' X. l- R9 L[ 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+ w8 p; v5 X& n5 N4 u }8 M: R
d [(a+bx)c ] /dx = -kc +s ; s {! f% s9 M3 t( E8 h- p8 M: ]9 Swhere: only x and c are unknown, others are all known, requiire c = function of x, what is this function? ; e% j! H5 {* T, f这道题难倒了我们全班的人,请赐教!* {7 ]+ R+ A0 {
多谢!' D7 e+ S* e/ j3 e& C2 z" X' a
3 i5 G- V# v! ]2 m* k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!0 V& P( b/ i) d4 ^
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[ Last edited by 醉酒当歌 on 2005-4-4 at 11:32 AM ]