BarBor {BarBorGradient}

How to use BarBor function minimum approximator.

Description

Approximate a functions minimum with double monoton method.

Usage

BarBor(exp,eps,x,v,n)

Arguments

exp

Expression of the function to be minimized.

eps

Precision of the approximation, recommended value is 10^-10.

x

Starting point of the approximation.

v

A character vector of the functions variables, for instance the two dimension fuction x1*x1+10*x2*x2 needs a c("x1","x2") vector.

n

Maximum setps to make while approximating, if the calculation reaches this number it exits with the current value and point. Recommended to be 10000.

Examples

test1 = expression(x1*x1+10*x2*x2)
eps = 10^-15
x = c(3,4)
v = c("x1","x2")
n = 10000
BarBor(test1,eps,x,v,n)