下列微分方程所描述的系统为线性时不变系统的是( )
A、y''(t) + y'(t)y(t) = f(t);
B、y'(t) + 2y(t) = f(-t);
C、y'(t) +3y(t) = f'(t) + 2f(t);
D、y'(t) + 2y(t) = |f(t)|
发布时间:2025-05-29 06:13:40
A、y''(t) + y'(t)y(t) = f(t);
B、y'(t) + 2y(t) = f(-t);
C、y'(t) +3y(t) = f'(t) + 2f(t);
D、y'(t) + 2y(t) = |f(t)|