Question

matlab 求解微分方程方程如下：x''(t)+x'(t)+x(t)-4*x(t)^2+3*x(t)^3-2*sin(

Answer 1

syms x t;

dsolve('D2x+Dx+x-4*x^2+3*x^3-2*sin(t)=0','x(0)=0','Dx(0)=0','t');

程序代码就是这个样子的,命令的意义自己看matlab help吧,不过用matlab没解出解析解来