I know line 4 goes wrong,but I don't know how to correct it. If anyone know it,I firmly hope to get your advice.

syms t y(t)
eqn=diff(y,t)==t*y;
cond=y(0)==2;
ySol=dsolve(eqn,cond);
disp('微分方程的解:')

微分方程的解:

disp(ySol)

fplot(ySol,[0,2])
title('一阶线性微分方程 dy/dt=t*y的解')
xlabel('时间 t')
ylabel('y(t)')
grid on

出错 Rick_ (第 4 行)

cond=y(0)==2;

^^^^

Answer 1

[Star Strider]

Your code looks correct to me. You set the initial condition to be 'y(0)==2' and that is what dsolve returned: From the plot, it is also obvious that 'y(t)' begins at 2.