a) Find a single nonlinear systems that has exactly four distinct equilibria, each of which has...

  

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a) Find a single nonlinear systems that has exactly four distinct equilibria, each of which has a different eigenvalue structure (i.e. a different type in the taxonomy). b) Find a nonlinear system that has the following phase portrait. Hint: Try polar coordinates. Plot the phase portait in Python. a) Find a single nonlinear systems that has exactly four distinct equilibria, each of which has a different eigenvalue structure (i.e. a different type in the taxonomy). b) Find a nonlinear system that has the following phase portrait. Hint: Try polar coordinates. Plot the phase portait in Python.