# condestimate

Version:

Returns a lower bound for the 1-norm condition number of a square matrix.

## Syntax

c = condestimate(a)
c = condestimate(a, b)
[c, d] = condestimate(a)
[c, d] = condestimate(a, b)
Legacy name: condest

## a

Square matrix.

## b

Positive integer.

## c

Lower bound for the 1-norm condition number of a.

## d

Approximation of a null vector. d is a vector of the same size as the number of columns in a.

A = [1, 2, 3; 0, 1, 1; 4, 3, 1]
D = condestimate(A)

Where This Node Can Run:

Desktop OS: Windows

FPGA: This product does not support FPGA devices