Wengert's Numerical Method for Partial Derivatives, Orbit Determination and Quasilinearization In a recent article in the Communications of the ACM, R. Wengert suggested a technique for machine evaluation of the partial derivatives of a function given in analytical form. In solving non-linear boundary-value problems using quasilinearization many partial derivatives must be formed analytically and then evaluated numerically. Wengert's method appears very attractive from the programming viewpoint equations which might not otherwise be undertaken. CACM April, 1965 Bellman, R. E. Kagiwada, H. Kalaba, R. E. CA650413 JB March 7, 1978 3:39 PM 1028 4 1278 1216 4 1278 1216 4 1278 1278 4 1278 1278 4 1278 1278 4 1278 1347 4 1278 1347 4 1278 1396 4 1278 1396 4 1278 1536 4 1278 973 5 1278 1028 5 1278 1029 5 1278 1278 5 1278 1278 5 1278 1278 5 1278 1347 5 1278 1396 5 1278 964 6 1278 1028 6 1278 1028 6 1278 1029 6 1278 1029 6 1278 1083 6 1278 1132 6 1278 1214 6 1278 1278 6 1278 1278 6 1278 1334 6 1278 1365 6 1278 1386 6 1278 1387 6 1278 1388 6 1278 1392 6 1278 1393 6 1278 1394 6 1278 1395 6 1278 1396 6 1278 1397 6 1278 1496 6 1278 284 6 1278 407 6 1278 3199 6 1278 3200 6 1278 3201 6 1278 3202 6 1278 3203 6 1278 3204 6 1278 561 6 1278 730 6 1278