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  • $\begingroup$ Thanks for the suggestion. I don't know the syntax a_?NumericQ, so I'm showing my limited knowledge of the program, but I'll look it up and give it a try. My problem involves integrating over functions of the normal PDF, which has no closed form, so I definitely need the numerical routine. $\endgroup$ Commented May 6, 2013 at 0:35
  • $\begingroup$ belisarius, This worked. I've got a few hundred thousand solutions to FindRoot with starting values that a funciton of a subset of the parameters. This ensures that they are in regions that generate solutions. Then I've got a few hundred thousand numerical integrals of functions with the FindRoot solutions embeded, all solving nicely. Thanks. $\endgroup$ Commented May 6, 2013 at 17:06
  • $\begingroup$ @Dan Glad to hear that $\endgroup$ Commented May 6, 2013 at 17:09