For the nonlinear systems in Problems 1, determine the equilibrium solutions, if any, and sketch the h-and v-nullclines, drawing appropriate arrows on and between them, to indicate the direction of the solution curves. If the system has equilibrium points, determine if they are stable or unstable. Add some typical solutions and write a description of their behaviors. Identify any limit cycles.
x' = xy
y' = y - x2 + 1