论坛 › K07：Maple › 用MAPLE求解微分方程，二阶导数的初始条件怎么输入？

nufeng 发表于 2012-9-11 08:03:58

用MAPLE求解微分方程，二阶导数的初始条件怎么输入？

比如：y'''-y''+2y'=0 ; y(0) = 1, y'(0)=0, y''(0) =0.
ode := diff(f(x), x, x, x)-(diff(f(x), x, x))+2*(diff(f(x), x))ics:=D(f(x))(0)=0,f(0)=1,.........................二阶导的初始条件？


先谢了!

nufeng 发表于 2012-9-11 11:56:46

Problem solved

ode := diff(f(x), x$3)-(diff(f(x), x$2))+2*(diff(f(x), x$1));
ics:=D(f)(0)=0,f(0)=1,(D@D)(f)(0)=0;
dsolve({ode,ics});

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