Abstract
The objective of this work was to disclose the use of operations with matrices in the formulation of rations for dairy cows, considering the great potential that this methodology presents to solve pre-defined parameters and unknowns in systems of linear equations. With the use of matrices it is possible to solve systems of complex linear equations that would be difficult to solve by other mathematical means. Thus, using the matrix theory, depending on the number of parameters and unknowns, the determinants calculation, the Gauss elimination method and the Gauss-Jordan scaling can be used as mathematical tools for solving the systems. These methods, besides finding the value of the variables, also allow fixing ingredients in order to obtain in the final formula foods in a pre-defined percentage, thus guaranteeing the fulfilment of the nutritional requirements required by the animal category.
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