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Caption: Mathematical Models by Arnold Emch - Series 4 (1928) This is a reduced-resolution page image for fast online browsing.
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IV Series 37. Harmonic Cubic, C = y2 - xz + 4x = 0. The Hessian is H = 12x2 — 3xy2 + 16 = 0. The Hessian of H is C itself, Fig. 14. Fig. 14
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