Question: How do I solve this example? help please

Error, (in DEtools/DEplot) vars must be declared as a list, e.g. [x(t),y(t),...]

 

restart;
with(DEtools);
DEplot(diff(y(t), t$2)-3*(diff(y(t), t))+2*y(t) = exp(t), [[y(0) = 0, (D(y))(0) = 2]], stepsize = .1, linecolor = black, thickness = 2);

 

Please Wait...