5.7.1 Multivariable differential calculus An Alternate Proof of the Equality of the Mixed Partial Derivatives, Gerard P. Protomastro, 7:4, 1976, 47-48, C Income Tax Averaging and Convexity, Michael Henry and G.E.Trapp, Jr., 15:3, 1984, 253-255, C, 0.8, 5.1.5, 9.5 Interactive Graphics for Multivariable Calculus, Michael E. Frantz, 17:2, 1986, 172-181, 1.2, 5.1.1, 5.1.4 Moire Fringes and the Conic Sections, M.R.Cullen, 21:5, 1990, 370-378, 0.5, 0.5, 0.5 Extreme and Saddle Points, David P. Kraines and Vivian Y. Kraines and David A. Smith, 21:5, 1990, 416-418, C, 5.1.4 'Hidden' Boundaries in Constrained Max-Min Problems, Herbert R. Bailey, 22:3, 1991, 227-229, C Calculus and Computer Vision, Mark Bridger, 23:2, 1992, 132-141, 8.3 Relative Maxima or Minima for a Function of Two Variables: A Neglected Approach, Paul Chacon, 23:2, 1992, 145-146, C Erratum: Relative Maxima or Minima for a Function of Two Variables, The Editors, 23:4, 1992, 314, C FFF #57. The Conservation of Energy, Ed Barbeau, 23:5, 1992, 405, F A Computer Lab for Multivariate Calculus, Casper R. Curjel, 24:2, 1993, 175-177, C, 1.2, 8.3 Least Squares and Quadric Surfaces, Donald Teets, 24:3, 1993, 243-244, C, 5.6.2, 7.3 FFF #64. Polar Paradox?, Ed Barbeau, 24:4, 1993, 344, F FFF #68. Variable Results with Partial Differentiation, Hugh Thurston, 25:1, 1994, 35-36, F Calculus in the Brewery, Susan Jane Colley, 25:3, 1994, 226-227, C Individualized Computer Investigatins for Multivariable Calculus, Larry Riddle, 26:3, 1995, 235-237 Presenting the Kuhn-Tucker Conditions Using a Geometric Approach, Patrick J. Driscoll and William P. Fox, 27:2, 1996, 101-108, 9.9 Why Polynomials Have Roots, Javier Gomez-Calderon and David M. Wells, 27:2, 1996, 90-94, 5.1.2, 9.5 Will the Real Best Fit Curve Please Stand Up?, Helen Skala, 27:3, 1996, 220-223, C, 7.3 Real Analysis in the Brewery, Sidney Kravitz, 27:3, 1996, C Using the College Mathematics Journal Topic Index in Undergraduate Courses, Donald E. Hooley, 28:2, 1997, 106-109, 4.1, 4.2, 5.1.4 Multiple Derivatives of Compositions: Investigating Some Special Cases, Irl C. Bivens, 28:4, 1997, 299-300, 3.2 Counterexamples to a Weakened Version of the Two-Variable Second Derivative Test, Allan A. Struthers, 28:5, 1997, 383-385, C Unifying a Family of Extrema Problems, William Barnier and Douglas Martin, 28:5, 1997, 388-391, C Paths of Minimum Length in a Regular Tetrahedron, Richard A. Jacobson, 28:5, 1997, 394-397, C, 0.4 The Long Arm of Calculus, Ethan Berkove and Rich Marchand, 29:5, 1998, 376-386, 9.10 Differential Forms for Constrained Max-Min Problems: Eliminating Lagrange Multipliers, Frank Zizza, 29:5, 1998, 387-396, 5.5 An "Extremely" Cautionary Tale, Mark Krusemeyer, 31:2, 2000, 128-130, C