t=0.5:0.0001:50;uc=dsolve('Du=-0.2*u-2','u(0.5)=10','t')figure(1),plot(t,uc)

发布时间：2019-08-09 08:25:39

uc =

(20*exp(1/10))/exp(t/5) - 10

??? Error using ==> plot
Conversion to double from sym is not possible.为什么会出错呢?