用MATLAB/SIMULINK解决线性微分方程x''+0.2x'=0.4x=0.2u(t),u(t)某时程函数
问题描述：
用MATLAB/SIMULINK解决线性微分方程x''+0.2x'=0.4x=0.2u(t),u(t)某时程函数
答
>> y=dsolve('D2x=-0.2*Dx+0.4*x')
y =
C2*exp(t*(41^(1/2)/10 - 1/10)) + C3/exp(t*(41^(1/2)/10 + 1/10))