optimization function



Hi !!
exists in maxima something  to optimize a function (non-linear) constrained
to some equations and inequations ?

Thanks in advance!
alexandre

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"No man can serve two masters; for either he will
      hate the one, and love the other; or else he will hold
      to the one, and despise the other.  Ye cannot serve
      God and mammon."            Matthew 6:24