ex753.m

详细介绍了Mathlab的使用方法与技巧

syms s x1 x2 x3
A=[0 1 0;0 0 1;-25 -15 -7];B=[0;0;25];C=[1 0.2 0];
x=[x1;x2;x3];X=A*x+B
[x1,x2,x3]=dsolve('Dx1=x2','Dx2=x3','Dx3=-25*x1-15*x2-7*x3+25','x1(0)=0','x2(0)=0','x3(0)=0');
y=C*[x1;x2;x3]