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Tool: Inverses of 3 by 3 Matrices
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Go to: http://www.waldomaths.com/Matrix3D1LW.jsp (opens a new window)
Description: This applet is a calculator for finding inverses of 3 by 3 matrices, by calculating cofactors and determinants. The method is displayed fully, including cases of singular matrices which have no inverse. You can enter any matrix with integer elements up to 100.
Technology Type: Java Applet 
Author: R F Barrow
Language: English 
Cost: Does not require payment for use

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Courses: PreCalculus Linear Algebra, determinants, operations with matrices, matrix inverses