Thanks for making the worksheet available. It was helpful. The only differences between your worksheet and what I was doing were: (1) I used conjugate(x)*x^2 as opposed to abs(x)^2*x; (2) I had stiff=true as a dsolve option. David Halpern

Thanks for making the worksheet available. It was helpful. The only differences between your worksheet and what I was doing were: (1) I used conjugate(x)*x^2 as opposed to abs(x)^2*x; (2) I had stiff=true as a dsolve option. David Halpern

In the equation dx/dt = k1 x + k2 |x|^2 x k1=.1028350425e-2+.2909687207*I and k2=-1.494381393-.5012639048*I. For initial condition x(0)=0.001. I can solve only up to t=2.3 if I use numerically solve for x(t) using dsolve. However, if I recast this equation as a system of two equations by letting x(t)=r(t)exp(I*theta(t)), and solve for r and theta then I have no problem in finding a large time solution (say t=10000). David Halpern

In the equation dx/dt = k1 x + k2 |x|^2 x k1=.1028350425e-2+.2909687207*I and k2=-1.494381393-.5012639048*I. For initial condition x(0)=0.001. I can solve only up to t=2.3 if I use numerically solve for x(t) using dsolve. However, if I recast this equation as a system of two equations by letting x(t)=r(t)exp(I*theta(t)), and solve for r and theta then I have no problem in finding a large time solution (say t=10000). David Halpern

Acer, yes forward slashes work. David Halpern

Acer, yes forward slashes work. David Halpern

Georgios, thanks for your suggestions. The extra \ in the path name or the forward / worked. David Halpern

Georgios, thanks for your suggestions. The extra \ in the path name or the forward / worked. David Halpern