Topic: Cramer's Rule, Adjugate and Volume

When Cramer’s Rule Becomes Inefficient

Using Cramer’s Rule When Only One Unknown Is Needed

Two-Variable Systems with Cramer’s Rule

Three-Variable Systems with Strategic Cofactor Expansion

Testing Square Systems for Cramer’s Rule

Shears, Reflections, and Their Volume Factors

Proving Volume Scaling by a Linear Map in Rn

Proving the Adjugate Identity

Determinants as Signed Area Scale Factors

Determinants as Signed Volume Scale Factors in R3