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User-Supplied Derivatives.
If AUTO-constant JAC equals 0
then derivatives need not be specified in
FUNC, BCND, ICND, and FOPT; see Section sec:JAC.
If JAC=1 then derivatives must be given.
This may be necessary for sensitive
problems, and is recommended for computations in which AUTO
generates an extended system.
Examples of user-supplied derivatives can be found in
demos dd2, int, plp, opt, and ops.
Gabriel Lord
2007-11-19