HELP ASAP PLZ

SOLVE USING SIMULINK

Problem $2$

Van de Pol's equation is a nonlinear model for some oscillatory processes. It is:

$y^{}-b(1-y^2)y^{}+y=0$

Solve and plot the solution for the following cases:

a$)b=1,y(0)=y^{}(0)=0\mathrm{.}1,0t25$

b$)b=3,y(0)=y^{}(0)=2,0t25$