For the given vector field A = re^(-θ) + θ, find div(A) analytically and using MATLAB* (transformation to the Cartesian coordinates is required). Plot the vector field A and the contours of the constant values of the divergence in the same figure. Use two interval values: [-1 < x, y < 1] and [-7 < x, y < 7] with 0.1 step in each axis to produce two plots. Compare the value of the divergence at points P1 (X1, Y1) = (0.5, 0.5) and P2 (X2, Y2) = (3, 2). Create a comparison table. Explain the discrepancy.