Write a Java program that uses an algorithm implementing the Gauss-Jordan
method to solve the system of linear equations given in the introduction. Your
output must show the output of every calculation to no more than seven (7) decimal
places. You must create and use a function that cuts off the result of each
calculation at exactly seven decimal places and uses this cutoff value in any
subsequent calculation

I believe you don't understand what DaniWeb Community is about; we are here to support people with IT problems. We are not your little slaves you can command and expect us to write an entire script for you. Atleast have the decency to try to make the script yourself. When you stumble on a problem you can not solve yourself and haven't found a solution using Google, then you can post it here on Daniweb and we will be happy to help you then.

~G

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