Recent content by menphis

I'm sorry for PDE and wrong section In the polar coordinates have equations this shape: rho' cos(phi)=rho sin(phi)(1+phi') rho' sin(phi)=- rho cos(phi)(1+phi')

Homework Statement Hi, i have the following system of equation. In the task is that system have periodic solution and have to be used polar coordinates. Homework Equations x'=1+y-x^2-y^2 y'=1-x-x^2-y^2 The Attempt at a Solution After transfer to polar system i tried to use the method...