0 0.5 1 0 -0.5 -1 1.5 2 2.5 3 3.5 4 ellint_3(k, n, phi) k n=0 φ=1.25 n=0.5 φ=1.25 n=0.25 φ=π/2 n=0.75 φ=π/2 Elliptic Of the Third Kind