Contour Plots and Gradiend Fileds




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θ = 0
θ = 30‹
θ = 60‹
θ = 90‹
θ = 120‹
θ = 150‹
θ = 180‹
θ = 210‹
θ = 240‹
θ = 270‹
θ = 300‹
θ = 330‹