- and why what is the axis of rotation? 2) Suppose we have the 2D vector field A = -sin(3xy) + 9 cos(21x) a) Using Python, plot the field for x and y from -1 to 1. Include a printout, b) Calculate the curl. c) In your Python plot, indicate where the curl is the largest. You may indicate multiple regions. d) Calculate the divergence. What does this tell you about the field