尝试
t = 0.0;
TSTOP = 6.0;
y = [1.5 0];
h = 0.1;
[t,y] = ode45(@deqs,[0 tstop],y);
情节(t,y(:,1),'ko-')
Xlabel(“时间)”);ylabel('H/R')
网格上
功能f = deqs(x,y)
p = sqrt(2*y(1)-y(1)^2);
q = 1 -y(1);
f =零(2,1);
f(1)= y(2);
f(2)= 2/pi*(atan(q/p) + q*p);
结尾%功能DEQ