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A Geometrical Approach to Cramer's Rule

Motivated by the interpretation of a determinant of a \(2 \times 2\) matrix as the area of a parallelogram, the author derives Cramer's rule geometrically.

Old Node ID: 
1840
Author(s): 
J. W. Orr (Ireland)
Publication Date: 
Wednesday, June 4, 2008
Original Publication Source: 
Mathematics Magazine
Original Publication Date: 
February, 1989
Subject(s): 
Algebra and Number Theory
Linear Algebra
Systems of Linear Equations
Topic(s): 
Linear Algebra
Determinants
Geometry
Solving Linear Systems: Invertibility
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Publish Page: 
Furnished by JSTOR: 
File Content: 
Rating Count: 
20.00
Rating Sum: 
53.00
Rating Average: 
2.65
Author (old format): 
J. W. Orr
Applicable Course(s): 
3.8 Linear/Matrix Algebra
Modify Date: 
Tuesday, July 29, 2008
Average: 2.7 (20 votes)

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