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Khan Academy
Learn about matrices, their properties, and how to perform operations with them.
Matrices, intro (article) | Khan Academy
Get ready for Algebra 2; Get ready for Precalculus; Get ready for AP® Calculus; Get ready for AP® Statistics; Math: high school & college; Algebra 1; Geometry; Algebra 2; ... Lesson 2: Vectors and matrices. Prerequisites overview. Vectors and notation. Dot products. Cross products. Matrices, intro. Visualizing matrices. Determinants. Math >
Khan Academy
Curso de álgebra sobre matrizes na Khan Academy, uma organização sem fins lucrativos que oferece educação gratuita de classe mundial.
DEPRECATED Matrix transpose (practice) - Khan Academy
GRAVEYARD Algebra 2: Matrices. IDEAS Algebra 2: Matrices. Multiplying a matrix by a column vector. Transpose of a matrix. DEPRECATED Matrix transpose. DEPRECATED Representing relationships with matrices. DEPRECATED Defined and undefined matrix operations . DEPRECATED Properties of matrix multiplication.
Multiplying matrices by scalars (video) | Khan Academy
Sal defines what it means to multiply a matrix by a scalar (in the world of matrices, a scalar is simply a regular number).
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Pre-K through grade 2 (Khan Kids) Early math review; 2nd grade; 3rd grade; 4th grade; 5th grade; 6th grade; 7th grade; 8th grade; ... Get ready for Algebra 2; Get ready for Precalculus; Get ready for AP® Calculus; Get ready for AP® Statistics; Math: high school & college; Algebra 1; Geometry; Algebra 2; Integrated math 1;
Transposes of sums and inverses - Khan Academy
Suppose we have a square matrix, A, whose size is n. The inverse of A, denoted A^(-1), is another square matrix of size n such that A*A^(-1) = A^(-1)*A = I where I is the identity matrix with size n. Note that not all square matrices have an inverse.
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Learn how to multiply matrices with step-by-step instructions and examples on Khan Academy.
Transpose of a matrix product (video) - Khan Academy
And you could essentially prove it using what we proved in this video right here, that you take the product of two matrices, take their transpose, it's equal to the product of their transposes in reverse order.
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