In Problems 23 through 26, a system dx/dt = F(x, y), dy/dt = G(x, y) is given.

Question:

In Problems 23 through 26, a system dx/dt = F(x, y), dy/dt = G(x, y) is given. Solve the equation

to find the trajectories of the given system. Use a computer system or graphing calculator to construct a phase portrait and direction field for the system, and thereby identify visually the apparent character and stability of the critical point (0 , 0) of the given system.