您所在位置：主题：请教用matlab解常微分方程
wangjun_tongji
[专家分：0] 发布于 2008-04-29 12:42:00
下面是我用matlab解常微分方程的具体情况，其中a,b,c,d,e为与y、x无关的系数
>> dsolve('(a+b*y)*Dy=c*y^4+d*y+e','x')
Warning: Explicit solution could not be found; implicit solution returned.
> In dsolve at 312
ans =
x-Int(1/(c*_a^4+d*_a+e)*(a+b*_a),_a = .. y)+C1 = 0
请问：_a = .. y是什么意思？
>> dsolve('(a+b*y)*Dy=c*y^4+d*y+e','x')
Warning: Explicit solution could not be found; implicit solution returned.
> In dsolve at 312
ans =
x-Int(1/(c*_a^4+d*_a+e)*(a+b*_a),_a = .. y)+C1 = 0
请问：_a = .. y是什么意思？