Learn how to use inverse operations to find the value of an unknown variable in an equation, so that the value is true.

The Balance Model: Hindrance or Support for the Solving of Linear Equations with One Unknown, Educational Studies in Mathematics, Vol. 49, No. 3 (2002), pp. 341-359 ...

An n × n complex matrix A is said to be a reflexive (anti-reflexive) matrix with respect to the generalized reflection matrix P if A = PAP (A = — PAP). The reflexive and anti-reflexive matrices have ...