CraigsMaths

Mathematics Teaching for Learning

Cramer’s Rule

CraigsMaths
Mathematics Teaching for Learning
Engineering Maths B, Matrices, Simultaneous equations
July 30th, 2008 by admin
Permalink: http://www.craigsmaths.com/ea003-engineering-mathematics-b/cramers-rule/

Given a system of simultaneous equations in matrix form

Simultaneous equations in matrix form

Where is an invertable n x n square matrix, is a variables column matrix containing and is a constants matrix containing .

Then can be found with Cramer’s rule,

Cramers rule

Cramer's rule

Where is formed by replacing the ith column of with .

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