Need Full matlab code and answers to questions

Part A Using the program pplane1, plot the direction field and several solutions to the ordinary differential equations dz dt z_2sinz. 2. The autonomous equation dz dt z- sin z. 3. The non-autonomous equation dzr 3 dt It is up to you to pick the range over which you plot in r and t in order to see the behavior. Print your answers to graphics files (From the "File-+save as" menu in the figure window, no screenshotsl) And hand them in on paper along with your answer to the following questions 1. What are all the equilibria of equation 1? 2. Which of these are stable and which are unstable? 3. Why do the results look so different in equations 1 and 2? Support your answer with math and graphs 4. Describe the long-term behavior of equation 3 in words Part B