Question

matlab求解常微分方程y''-0.01(y')^2+2y=sint,y(0)=0,y'(0)=1,0

Answer 1

clf;clear,clc

dydt=@(t,y)[y(2);sin(t)-2*y(1)+.01*y(2)^2];

y0=[0 1];

tspan=[0 5];

[t,val]=ode45(dydt,tspan,y0);

plot(t,val)

legend('t-y','t-y''')

grid on