5.2.3 Change of variable (substitution) Some Problems of Utmost Gravity, William C. Stretton, 3:1, 1972, 72-75, C, 5.7.2 Formal Integration: Dangers and Suggestions, S. K. Stein, 5:1, 1974, 1-7, 5.2.8 Calculus by Mistake, Louise S. Grinstein, 5:4, 1974, 49-53, C, 5.1.2, 5.1.4, 5.2.2, 5.2.5, 5.2.10, 5.4.2, 5.6.1, 5.7.2 A Simple Antidifferentiation Technique, Alan H. Schoenfeld, 9:2, 1978, 104-105, C Another Approach to the integral of sec x dx, Norman Schaumberger, 10:3, 1979, 202, C A Standard Integral Formula, R. S. Luthar, 12:5, 1981, 329-330, C A Guide to Computer Algebra Systems, John M. Hosack, 17:5, 1986, 434-441, 0.2, 4.1, 5.1.2, 5.1.5, 5.2.4, 5.2.5 Computing Pi, Harley Flanders, 18:3, 1987, 230-235, 5.4.2, 8.1 Lattices of Trigonometric Identities, William E. Rosenthal, 20:3, 1989, 232-234, C, 0.6 A Direct Proof of the Integral Formula for Arctangent, Arnold J. Insel, 20:3, 1989, 235-237, C, 5.1.2, 5.2.6 Four Crotchets on Elementary Integration, Leroy F. Meyers, 22:5, 1991, 410-413, C, 5.2.5, 5.3.2, 6.1 Reduction Formulas Revisited, T. N. Subramaniam and D. E. G. Malm, 22:5, 1991, 421-429, 5.2.5 Gather; Don't Strew, Bob Weinstock, 23:5, 1992, 372, C Does What Goes Up Take the Same Time to Come Down?, P. Glaister, 24:2, 1993, 155-158, C, 9.10 FFF #101. The Disappearing Factor, James C. Kirby, 27:2, 1996, 117, F, 5.2.10 (see also 30:2, 1999, 131) FFF #102. Why Integrate?, James C. Kirby, 27:2, 1996, 118, F (see also Donald E. Hooley, 35:1, 2004, 42) Antiderivative Formulas, Jingcheng Tong, 29:1, 1998, 32, C The Average Distance of the Earth from the Sun, David Deever, 30:3, 1999, 218-220, C, 0.5, 5.2.8 FFF #165. Two separate answers?, Ken Taylor, 31:5, 2000, 396, F, 5.2.5 FFF #180. Integration Discrepancies, Roger B. Nelsen, 32:5, 2001, 365-366, F FFF #281. Making an integrand completely imaginary, John K. Osoinach, 39:4, 2008, 299, F FFF #284. A funky change of variables, Allen J. Schwenk, 39:5, 2008, 382, F