Curated OER
MT-A315 Introduction to Linear Algebra: Worksheet 5.2
For this linear algebra worksheet, students find the determinant of a matrix. Additionally, they expand rows and use the product theorem to identify which matrices are invertible. Students complete five multi-step problems.
Wolfram Research
Wolfram Math World: Determinant
This site has a good definition and examples of determinants, the site begins by explaining what the value of a determinant is, then gives an example of the determinant of a two by two matrix, a generic formula for finding the...
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Other
Metal: Matrices [Pdf]
The resource is a lesson guide that teaches the basic mathematical concepts needed for teaching economics and financial economics. Topics include matrix transposition, matrix inversion, and operations with matrices. Applications of Excel...
Georgia Department of Education
Ga Virtual Learning: Introduction to Epidemiology
In this comprehensive interactive tutorial you will not only learn what epidemiology is but you will also learn the role of epidemiology in public health practice. Also, you will explore the history of epidemiology to understand how its...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Systems of Inequalities
Hotmath provides 21 practice problems dealing with systems of equations and inequalities. Each of the practice problems include a step-by-step guide for solving their algebraic problem.
Wolfram Research
Wolfram Math World: Minor
This site explains what a minor is relative to matrix manipulations and gives insight on how to use the program "Mathmatica" involving minors.
Texas Instruments
Texas Instruments: Determinants and Inverse Matrices
In these questions, students are asked to find the determinant and the inverse of four 2 x 2 matrices. These multiple choice questions have solutions provided.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Geometria De Los Determinantes
In Spanish. In this interactive session you will study the second order determinant and its properties. Both methods geometrically and algebraically are presented.
J Coffman
Joseph Coffman's Lecture Notes: 2 X 2 Matrices, Determinants, Inverses
Learners investigate matrices, determinants, and inverses. Topics include the identity matrix and inverse of a matrix. The resource consists of examples with detailed solutions and a quiz.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Determinantes
Learn how to work with determinants and learn about its properties with this interactive activity.
McGraw Hill
Glencoe: Quiz on Determinants and Multiplicative Inverses of Matrices
Learners demonstrate comprehension of advanced mathematical concepts in Algebra II. The questions check understanding on matrices. Topics include determinants and multiplicative inverses.
CK-12 Foundation
Ck 12: Algebra: Cramer's Rule
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving systems of equations using Cramer's Rule.
CK-12 Foundation
Ck 12: Algebra: Determinants
[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the determinant of a 2 x 2 and a 3 x 3 matrix.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Cramer's Rule and Determinant of a Matrix
Sixteen problems present a variety of practice using Cramer's Rule to solve equations and systems of equations and working with the determinant of a matrix. They are given with each step to the solution cleverly revealed one at a time....
Analyze Math
Analyze Math: Calculate Determinant of a Matrix
Learners explore the Algebra II topic of matrices. The tutorial demonstrates how to calculate the determinant of 2 by 2 and 3 by 3 matrices. The activity includes examples with detailed solutions.
Purple Math
Purplemath: Minors and Cofactors: Expanding Along a Row
A "minor" is the determinant of the square matrix formed by deleting one row and one column from some larger square matrix. To find the determinant of the matrix A, you have to pick a row or a column of the matrix, find all the cofactors...
Khan Academy
Khan Academy: Determinant of a 2x2 Matrix
Find the determinant of a given 2x2 matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Determinants
[Free Registration/Login may be required to access all resource tools.] Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant...
CK-12 Foundation
Ck 12: Algebra: Adding and Subtracting Matrices
[Free Registration/Login may be required to access all resource tools.] This lesson covers adding and subtracting matrices with the same dimensions. Students can watch a video tutorial, explore guided notes and then attempt practice...
CK-12 Foundation
Ck 12: Algebra: Writing and Solving a Matrix Equation
[Free Registration/Login may be required to access all resource tools.] This lesson covers using a matrix equation to solve a system of linear equations.
Math Notes and Math Tests
Pre Calculus Notes: The Inverse of a Square Matrix [Pdf]
Students explore the inverse of a square matrix. Topics examined are the inverse of a real number, using inverses to solve systems, and the determinant of a 2 x 2 matrix. Class notes and examples are included.
Math Notes and Math Tests
Pre Calculus Notes: The Determinant of a Square Matrix [Pdf]
The resource investigates the determinant of a square matrix. Topics examined are computing determinants, Sarrus?s rule, and the cross product of two vectors. Class notes and examples are included.
Math Notes and Math Tests
Pre Calculus Notes: Applications of Determinants [Pdf]
The tutorial discusses applications of determinants. Students learn about Cramer?s rule, determinants, area, and volume. The resource consists of class notes and examples with solutions.
Wolfram Research
Wolfram Math World: Cramer's Rule
This site from MathWorld discusses Cramer's Rule with regard to nondegenerate solutions. The site contains links to important topics such as the determinant and the page gives the vector analog of Cramer's Rule for the three dimensional...