# 2x2 determinant   53 videos

• #### 2x2 Determinants

##### PrecalculusSystems of Linear Equations and Matrices

How to compute the determinant of a 2x2 square matrix.

square matrices determinant 2x2 determinant
• #### Invertible Square Matrices and Determinants

##### PrecalculusSystems of Linear Equations and Matrices

How to determine whether a square matrix is invertible using its determinant.

square matrices invertible determinant zero determinant inverse of a 2x2 matrix
• #### Area With Determinants

##### PrecalculusSystems of Linear Equations and Matrices

How to compute the area of a parallelogram using a determinant.

parallelogram vectors determinant area
• #### 3x3 Determinants

##### PrecalculusSystems of Linear Equations and Matrices

How to compute the determinant of a 3x3 square matrix using minors by expanding along the top row.

square matrices determinant 3x3 determinant minor of an element
• #### Simplifying Determinants

##### PrecalculusSystems of Linear Equations and Matrices

How to simplify determinants using three row (or column) operations.

determinant row operations column operations interchanging rows common factors adding a multiple of one row to another
• #### Relations and Determining Whether a Relation is a Function

##### AlgebraGraphs and Functions

How to determine whether a relation is a function.

domain range input output function relation

• #### The Cross Product of Vectors

##### PrecalculusSystems of Linear Equations and Matrices

How to compute the cross product of two 3D vectors.

unit vectors components cross product determinant
• #### Number of Diagonals in a Polygon

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to determine the number of diagonals in a polygon.

vertex diagonal non consecutive vertices polygon
• #### Triangle Side Inequalities

##### GeometryTriangles

How to determine the triangle side inequalities.

shortest distance side length inequalities
• #### Derivatives of Linear Functions

##### CalculusThe Derivative

How to determine the derivative of a linear function.

linear functions derivative slope
• #### Derivatives of Power Functions

##### CalculusThe Derivative

How to determine the derivative of a power function.

power functions derivative derivative formula
• #### Cramer's Rule

##### PrecalculusSystems of Linear Equations and Matrices

How to solve a system of two linear equations with two unknowns using Cramer's rule.

systems of linear equations Cramer's rule determinant coefficient matrix