This function was contributed by Diethelm Wuertz.
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start 
numeric vector of start values. 
objective 
the function to be minimized f(x). 
eqFun 
functions specifying equal constraints of the form
h_i(x) = 0. Default: 
leqFun 
functions specifying less equal constraints of the
form g_i(x) <= 0. Default: 
lower 
a numeric representing lower variable
bounds. Repeated as needed. Default: 
upper 
a numeric representing upper variable
bounds. Repeated as needed. Default: 
gradient 
gradient of f(x). Default: 
hessian 
hessian of f(x). Default: 
control 
a list of control parameters. See

list()
Diethelm Wuertz
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