Cramerszabály
Cramerszabály is a mathematical rule used in algebra, system of equations, and linear algebra to determine the value of a variable when some but not all values of other variables are known. It is named after the Danish mathematician Gabriel Cramer.
The rule states that if a system of linear equations has a solution, it can be found
The value of the variable is then the quotient of the cofactor determinant and the determinant of
In practice, Cramerszabály is often used as an alternative to Gaussian elimination or matrix inversion when