System of Equations 04. 05. Chapter 04. 05


If a solution exists, how do we know whether it is unique?



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If a solution exists, how do we know whether it is unique?


In a system of equations that is consistent, the rank of the coefficient matrix is the same as the augmented matrix . If in addition, the rank of the coefficient matrix is same as the number of unknowns, then the solution is unique; if the rank of the coefficient matrix is less than the number of unknowns, then infinite solutions exist.




Figure 5.2. Flow chart of conditions for consistent and inconsistent system of equations.




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