3) Given a 3D vector field in Cartesian coordinates = sin(x)2 + y- 22 a) Plot the field using Python over the range x, y and z from - 1 to 1. b) Calculate the divergence of the field. What is the value at the origin? c) Calculate the curl of the field, and explain what the result means. 4) Calculate the surface area of a cone with radius R and angle (see shaded region). Give your answer in terms of R1 and PR.. conical surface