*Cramer's Rule gives an explicit formulation for the unique solution to a system of \(n\) equations in \(n\) unknowns when the coefficient matrix of the system is invertible. The...*

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*The authors discuss the evaluation of certain improper integrals by first transforming them.*

*The Golden Mean is found in electric circuit theory.*

*The author provides a short proof of Cramer’s rule that avoids using the adjoint of a matrix.*

*Elementary examples from college algebra illustrate the idea of involutions.*